12 datasets found
  1. G

    QGIS Training Tutorials: Using Spatial Data in Geographic Information...

    • open.canada.ca
    • datasets.ai
    • +2more
    html
    Updated Oct 5, 2021
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    Statistics Canada (2021). QGIS Training Tutorials: Using Spatial Data in Geographic Information Systems [Dataset]. https://open.canada.ca/data/en/dataset/89be0c73-6f1f-40b7-b034-323cb40b8eff
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    htmlAvailable download formats
    Dataset updated
    Oct 5, 2021
    Dataset provided by
    Statistics Canada
    License

    Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
    License information was derived automatically

    Description

    Have you ever wanted to create your own maps, or integrate and visualize spatial datasets to examine changes in trends between locations and over time? Follow along with these training tutorials on QGIS, an open source geographic information system (GIS) and learn key concepts, procedures and skills for performing common GIS tasks – such as creating maps, as well as joining, overlaying and visualizing spatial datasets. These tutorials are geared towards new GIS users. We’ll start with foundational concepts, and build towards more advanced topics throughout – demonstrating how with a few relatively easy steps you can get quite a lot out of GIS. You can then extend these skills to datasets of thematic relevance to you in addressing tasks faced in your day-to-day work.

  2. Open-Source GIScience Online Course

    • ckan.americaview.org
    Updated Nov 2, 2021
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    ckan.americaview.org (2021). Open-Source GIScience Online Course [Dataset]. https://ckan.americaview.org/dataset/open-source-giscience-online-course
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    Dataset updated
    Nov 2, 2021
    Dataset provided by
    CKANhttps://ckan.org/
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Description

    In this course, you will explore a variety of open-source technologies for working with geosptial data, performing spatial analysis, and undertaking general data science. The first component of the class focuses on the use of QGIS and associated technologies (GDAL, PROJ, GRASS, SAGA, and Orfeo Toolbox). The second component of the class introduces Python and associated open-source libraries and modules (NumPy, Pandas, Matplotlib, Seaborn, GeoPandas, Rasterio, WhiteboxTools, and Scikit-Learn) used by geospatial scientists and data scientists. We also provide an introduction to Structured Query Language (SQL) for performing table and spatial queries. This course is designed for individuals that have a background in GIS, such as working in the ArcGIS environment, but no prior experience using open-source software and/or coding. You will be asked to work through a series of lecture modules and videos broken into several topic areas, as outlined below. Fourteen assignments and the required data have been provided as hands-on opportunites to work with data and the discussed technologies and methods. If you have any questions or suggestions, feel free to contact us. We hope to continue to update and improve this course. This course was produced by West Virginia View (http://www.wvview.org/) with support from AmericaView (https://americaview.org/). This material is based upon work supported by the U.S. Geological Survey under Grant/Cooperative Agreement No. G18AP00077. The views and conclusions contained in this document are those of the authors and should not be interpreted as representing the opinions or policies of the U.S. Geological Survey. Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey. After completing this course you will be able to: apply QGIS to visualize, query, and analyze vector and raster spatial data. use available resources to further expand your knowledge of open-source technologies. describe and use a variety of open data formats. code in Python at an intermediate-level. read, summarize, visualize, and analyze data using open Python libraries. create spatial predictive models using Python and associated libraries. use SQL to perform table and spatial queries at an intermediate-level.

  3. Open Source GIS Training for Improved Protected Area Planning and Management...

    • solomonislands-data.sprep.org
    • pacific-data.sprep.org
    pdf, zip
    Updated Feb 15, 2022
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    Bradley Eichelberger, SPREP PIPAP GIS Consultant (2022). Open Source GIS Training for Improved Protected Area Planning and Management in the Solomon Islands [Dataset]. https://solomonislands-data.sprep.org/dataset/open-source-gis-training-improved-protected-area-planning-and-management-solomon-islands
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    zip(702782472), pdf(3669473), pdf(969719), pdf(5434848)Available download formats
    Dataset updated
    Feb 15, 2022
    Dataset provided by
    Pacific Regional Environment Programmehttps://www.sprep.org/
    Authors
    Bradley Eichelberger, SPREP PIPAP GIS Consultant
    License

    Public Domain Mark 1.0https://creativecommons.org/publicdomain/mark/1.0/
    License information was derived automatically

    Area covered
    Solomon Islands, 168.10043334961 -4.0464671937446, 155.35629272461 -4.0464671937446, POLYGON ((155.35629272461 -12.561265715616, 168.10043334961 -12.561265715616))
    Description

    Dataset contains training material on using open source Geographic Information Systems (GIS) to improve protected area planning and management from a workshop that was conducted on October 19-23, 2020. Specifically, the dataset contains lectures on GIS fundamentals, QGIS 3.x, and global positioning system (GPS), as well as country-specific datasets and a workbook containing exercises for viewing data, editing/creating datasets, and creating map products in QGIS. Supplemental videos that narrate a step-by-step recap and overview of these processes are found in the Related Content section of this dataset.

    Funding for this workshop and material was funded by the Biodiversity and Protected Areas Management (BIOPAMA) programme. The BIOPAMA programme is an initiative of the Organisation of African, Caribbean and Pacific (ACP) Group of States financed by the European Union's 11th European Development Fund. BIOPAMA is jointly implemented by the International Union for Conservation of Nature {IUCN) and the Joint Research Centre of the European Commission (EC-JRC). In the Pacific region, BIOPAMA is implemented by IUCN's Oceania Regional Office (IUCN ORO) in partnership with the Secretariat of the Pacific Regional Environment Programme (SPREP). The overall objective of the BIOPAMA programme is to contribute to improving the long-term conservation and sustainable use of biodiversity and natural resources in the Pacific ACP region in protected areas and surrounding communities through better use and monitoring of information and capacity development on management and governance.

  4. Training: 3. GIS Concepts, Applications, and Software

    • sudan-uneplive.hub.arcgis.com
    Updated Jun 25, 2020
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    UN Environment, Early Warning &Data Analytics (2020). Training: 3. GIS Concepts, Applications, and Software [Dataset]. https://sudan-uneplive.hub.arcgis.com/documents/642a61631daf44e0b91991fbd774e3e8
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    Dataset updated
    Jun 25, 2020
    Dataset provided by
    United Nations Environment Programmehttp://www.unep.org/
    Authors
    UN Environment, Early Warning &Data Analytics
    Description

    This is a full-day training, developed by UNEP CMB, to introduce participants to the basics of GIS, how to import points from Excel to a GIS, and how to make maps with QGIS, MapX and Tableau. It prioritizes the use of free and open software.

  5. Open Source GIS Training for Improved Protected Area Planning and Management...

    • pacific-data.sprep.org
    • samoa-data.sprep.org
    pdf, zip
    Updated Feb 8, 2025
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    Secretariat of the Pacific Regional Environment Programme (2025). Open Source GIS Training for Improved Protected Area Planning and Management in Samoa [Dataset]. https://pacific-data.sprep.org/dataset/open-source-gis-training-improved-protected-area-planning-and-management-samoa
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    pdf(1016525), zip, pdf(3655929), pdf(4922394)Available download formats
    Dataset updated
    Feb 8, 2025
    Dataset provided by
    Pacific Regional Environment Programmehttps://www.sprep.org/
    License

    Public Domain Mark 1.0https://creativecommons.org/publicdomain/mark/1.0/
    License information was derived automatically

    Area covered
    Samoa, POLYGON ((186.75230026245 -14.517952072974, 188.90562057495 -14.517952072974)), 188.90562057495 -13.120440826626, 186.75230026245 -13.120440826626
    Description

    Dataset contains training material on using open source Geographic Information Systems (GIS) to improve protected area planning and management from workshops that were conducted on February 19-21 and October 6-7, 2020. Specifically, the dataset contains lectures on GIS fundamentals, QGIS 3.x, and global positioning system (GPS), as well as country-specific datasets and a workbook containing exercises for viewing data, editing/creating datasets, and creating map products in QGIS. Supplemental videos that narrate a step-by-step recap and overview of these processes are found in the Related Content section of this dataset.

    Funding for this workshop and material was funded by the Biodiversity and Protected Areas Management (BIOPAMA) programme. The BIOPAMA programme is an initiative of the Organisation of African, Caribbean and Pacific (ACP) Group of States financed by the European Union's 11th European Development Fund. BIOPAMA is jointly implemented by the International Union for Conservation of Nature {IUCN) and the Joint Research Centre of the European Commission (EC-JRC). In the Pacific region, BIOPAMA is implemented by IUCN's Oceania Regional Office (IUCN ORO) in partnership with the Secretariat of the Pacific Regional Environment Programme (SPREP). The overall objective of the BIOPAMA programme is to contribute to improving the long-term conservation and sustainable use of biodiversity and natural resources in the Pacific ACP region in protected areas and surrounding communities through better use and monitoring of information and capacity development on management and governance.

  6. Open Source GIS Training for Improved Protected Area Planning and Management...

    • rmi-data.sprep.org
    • pacific-data.sprep.org
    pdf, zip
    Updated Nov 2, 2022
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    Bradley Eichelberger, SPREP PIPAP GIS Consultant (2022). Open Source GIS Training for Improved Protected Area Planning and Management in the Republic of the Marshall Islands [Dataset]. https://rmi-data.sprep.org/dataset/open-source-gis-training-improved-protected-area-planning-and-management-republic-marshall
    Explore at:
    pdf(5213196), pdf(1167275), zip(151511128), pdf(3658659)Available download formats
    Dataset updated
    Nov 2, 2022
    Dataset provided by
    Pacific Regional Environment Programmehttps://www.sprep.org/
    Authors
    Bradley Eichelberger, SPREP PIPAP GIS Consultant
    License

    Public Domain Mark 1.0https://creativecommons.org/publicdomain/mark/1.0/
    License information was derived automatically

    Area covered
    Marshall Islands, 176.18637084961 3.4531078732957)), 159.92660522461 16.662506225635, POLYGON ((159.92660522461 3.4531078732957, 176.18637084961 16.662506225635
    Description

    Dataset contains training material on using open source Geographic Information Systems (GIS) to improve protected area planning and management from a workshop that was conducted on August 17-21, 2020. Specifically, the dataset contains lectures on GIS fundamentals, QGIS 3.x, and global positioning system (GPS), as well as country-specific datasets and a workbook containing exercises for viewing data, editing/creating datasets, and creating map products in QGIS. Supplemental videos that narrate a step-by-step recap and overview of these processes are found in the Related Content section of this dataset.

    Funding for this workshop and material was funded by the Biodiversity and Protected Areas Management (BIOPAMA) programme. The BIOPAMA programme is an initiative of the Organisation of African, Caribbean and Pacific (ACP) Group of States financed by the European Union's 11th European Development Fund. BIOPAMA is jointly implemented by the International Union for Conservation of Nature {IUCN) and the Joint Research Centre of the European Commission (EC-JRC). In the Pacific region, BIOPAMA is implemented by IUCN's Oceania Regional Office (IUCN ORO) in partnership with the Secretariat of the Pacific Regional Environment Programme (SPREP). The overall objective of the BIOPAMA programme is to contribute to improving the long-term conservation and sustainable use of biodiversity and natural resources in the Pacific ACP region in protected areas and surrounding communities through better use and monitoring of information and capacity development on management and governance.

  7. Supplementary material 3 from: Seltmann K, Lafia S, Paul D, James S, Bloom...

    • zenodo.org
    • data.niaid.nih.gov
    pdf
    Updated Jul 25, 2024
    + more versions
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    Katja Seltmann; Sara Lafia; Deborah Paul; Shelley James; David Bloom; Nelson Rios; Shari Ellis; Una Farrell; Jessica Utrup; Michael Yost; Edward Davis; Rob Emery; Gary Motz; Julien Kimmig; Vaughn Shirey; Emily Sandall; Daniel Park; Christopher Tyrrell; R. Sean Thackurdeen; Matthew Collins; Vincent O'Leary; Heather Prestridge; Christopher Evelyn; Ben Nyberg; Katja Seltmann; Sara Lafia; Deborah Paul; Shelley James; David Bloom; Nelson Rios; Shari Ellis; Una Farrell; Jessica Utrup; Michael Yost; Edward Davis; Rob Emery; Gary Motz; Julien Kimmig; Vaughn Shirey; Emily Sandall; Daniel Park; Christopher Tyrrell; R. Sean Thackurdeen; Matthew Collins; Vincent O'Leary; Heather Prestridge; Christopher Evelyn; Ben Nyberg (2024). Supplementary material 3 from: Seltmann K, Lafia S, Paul D, James S, Bloom D, Rios N, Ellis S, Farrell U, Utrup J, Yost M, Davis E, Emery R, Motz G, Kimmig J, Shirey V, Sandall E, Park D, Tyrrell C, Thackurdeen R, Collins M, O'Leary V, Prestridge H, Evelyn C, Nyberg B (2018) Georeferencing for Research Use (GRU): An integrated geospatial training paradigm for biocollections researchers and data providers. Research Ideas and Outcomes 4: e32449. https://doi.org/10.3897/rio.4.e32449 [Dataset]. http://doi.org/10.3897/rio.4.e32449.suppl3
    Explore at:
    pdfAvailable download formats
    Dataset updated
    Jul 25, 2024
    Dataset provided by
    Zenodohttp://zenodo.org/
    Authors
    Katja Seltmann; Sara Lafia; Deborah Paul; Shelley James; David Bloom; Nelson Rios; Shari Ellis; Una Farrell; Jessica Utrup; Michael Yost; Edward Davis; Rob Emery; Gary Motz; Julien Kimmig; Vaughn Shirey; Emily Sandall; Daniel Park; Christopher Tyrrell; R. Sean Thackurdeen; Matthew Collins; Vincent O'Leary; Heather Prestridge; Christopher Evelyn; Ben Nyberg; Katja Seltmann; Sara Lafia; Deborah Paul; Shelley James; David Bloom; Nelson Rios; Shari Ellis; Una Farrell; Jessica Utrup; Michael Yost; Edward Davis; Rob Emery; Gary Motz; Julien Kimmig; Vaughn Shirey; Emily Sandall; Daniel Park; Christopher Tyrrell; R. Sean Thackurdeen; Matthew Collins; Vincent O'Leary; Heather Prestridge; Christopher Evelyn; Ben Nyberg
    License

    CC0 1.0 Universal Public Domain Dedicationhttps://creativecommons.org/publicdomain/zero/1.0/
    License information was derived automatically

    Description

    The informed consent request and workshop survey questions given to participants after the workshop each day for 4 consecutive days.

  8. Open Source GIS Training for Improved Protected Area Planning and Management...

    • pacific-data.sprep.org
    • vanuatu-data.sprep.org
    pdf, zip
    Updated Jan 8, 2025
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    Secretariat of the Pacific Regional Environment Programme (2025). Open Source GIS Training for Improved Protected Area Planning and Management in Vanuatu [Dataset]. https://pacific-data.sprep.org/dataset/open-source-gis-training-improved-protected-area-planning-and-management-vanuatu
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    pdf(3536989), zip, pdf(5713678), pdf(889630)Available download formats
    Dataset updated
    Jan 8, 2025
    Dataset provided by
    Pacific Regional Environment Programmehttps://www.sprep.org/
    License

    Public Domain Mark 1.0https://creativecommons.org/publicdomain/mark/1.0/
    License information was derived automatically

    Area covered
    Vanuatu, 171.96762084961 -9.000382438291, 164.40902709961 -9.000382438291, 171.96762084961 -21.602534873927)), POLYGON ((164.40902709961 -21.602534873927
    Description

    Dataset contains training material on using open source Geographic Information Systems (GIS) to improve protected area planning and management from a workshop that was conducted on February 26-28, 2020. Specifically, the dataset contains lectures on GIS fundamentals, QGIS 3.x, and global positioning system (GPS), as well as country-specific datasets and a workbook containing exercises for viewing data, editing/creating datasets, and creating map products in QGIS. Supplemental videos that narrate a step-by-step recap and overview of these processes are found in the Related Content section of this dataset.

    Funding for this workshop and material was funded by the Biodiversity and Protected Areas Management (BIOPAMA) programme. The BIOPAMA programme is an initiative of the Organisation of African, Caribbean and Pacific (ACP) Group of States financed by the European Union's 11th European Development Fund. BIOPAMA is jointly implemented by the International Union for Conservation of Nature {IUCN) and the Joint Research Centre of the European Commission (EC-JRC). In the Pacific region, BIOPAMA is implemented by IUCN's Oceania Regional Office (IUCN ORO) in partnership with the Secretariat of the Pacific Regional Environment Programme (SPREP). The overall objective of the BIOPAMA programme is to contribute to improving the long-term conservation and sustainable use of biodiversity and natural resources in the Pacific ACP region in protected areas and surrounding communities through better use and monitoring of information and capacity development on management and governance.

  9. 2017–2018 Land Cover Map of Pyrénées-Atlantiques

    • zenodo.org
    • data.niaid.nih.gov
    zip
    Updated Jan 14, 2022
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    Lucas Schwaab; Vincent Thierion; Mathieu Fauvel; Michel Meuret; Pierre Gascouat; Lucas Schwaab; Vincent Thierion; Mathieu Fauvel; Michel Meuret; Pierre Gascouat (2022). 2017–2018 Land Cover Map of Pyrénées-Atlantiques [Dataset]. http://doi.org/10.5281/zenodo.5849046
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    zipAvailable download formats
    Dataset updated
    Jan 14, 2022
    Dataset provided by
    Zenodohttp://zenodo.org/
    Authors
    Lucas Schwaab; Vincent Thierion; Mathieu Fauvel; Michel Meuret; Pierre Gascouat; Lucas Schwaab; Vincent Thierion; Mathieu Fauvel; Michel Meuret; Pierre Gascouat
    License

    Attribution 4.0 (CC BY 4.0)https://creativecommons.org/licenses/by/4.0/
    License information was derived automatically

    Area covered
    Pyrénées-Atlantiques
    Description

    This archive contains:


    ├── classification_dpt64_16_classes.tif : the 16 classes land cover map

    ├── classification_dpt64_16_classes_confusion_matrix.png : the confusion matrix. Have a look at it, it is performed on a different dataset than the one used for training the classifier.

    ├── classification_dpt64_21_classes.tif : the 21 classes land cover map including post-treatments (https://framagit.org/Schwaab/projet_predateurs64/-/blob/main/scripts/ClassificationPostProcess.py)

    ├── colorFile.txt : color file for symbology

    ├── configfile_iota2.cfg : iota2 configuration file (in case you are already using iota2. If not, what are you waiting for ?)

    ├── document_methodologique.pdf : technical report (french) for the classification

    ├── nomenclature.txt : nomenclature file

    ├── reference_data_2018.shp : the training and validation data set in its 2018 version (for crops)

    ├── reference_data_2019.shp : the training and validation data set in its 2019 version (for crops)

    ├── reference_photo_interpretation.shp : the part of the training and validation data set that has been photo interpreted with a field giving the potential species or combinations of associated vegetation

    ├── reference_tree_nomenclature.png : a visual about the reference data

    ├── stratification_3_zones.shp : the stratification layer that has helped improve classification results. It is based on landscape entities (https://data.le64.fr/explore/dataset/entite-paysagere/)

    ├── style_16_classes.qml : the Qgis style layer 16 classes

    └── style_21_classes.qml : the Qgis style layer 21 classes

    Description:


    The land cover map of the French department Pyrénées-Atlantiques (64) is based on Sentinel-2 (L2A level) satellite images performed with Iota² chain (https://framagit.org/iota2-project/iota2/). The algorithm used is Random Forest. The time series used ranges from 2017 to 2018.

    During the development phase of this classification, the collection of additional training data on the photo-interpreted classes 'landes basses' (low heath shrublands), 'landes hautes' (high heath shrublands) and 'landes hautes avec arbres' (high heath shrublands with young-growth forest) has led to a remarkable increase of the number of pixels of these classes and with it the visual quality of the map. However, this increase has been linked with only minor to almost no significant improvement of the F-scores on these classes. Some are still massively confused with other land covers like grasslands and broadleaf mature forests. Especially the mixed class 'landes hautes avec arbres' (high heath shrublands with young-growth forest).

    We take it as a limit of the reference data that is built from divers data sources and would always beneficiate from more training samples of shrubby classes and a better precision of the class 'forêt de feuillus' (broadleaf mature forests). But this could also show the limit of pixel-oriented classifications for mixed/textured classes (classes with high intra-class heterogeneity). Experimentations using a contextual method – the Auto-context method now being included in Iota2 thanks to Dawa Derksen and Iota2 developers (http://lannister.ups-tlse.fr/oso/donneeswww_TheiaOSO/iota2_documentation/develop/autoContext.html) – has unfortunately not been conclusive on that matter yet.

  10. e

    Land cover change maps for Mato Grosso State in Brazil: 2001-2017 (version...

    • b2find.eudat.eu
    Updated Mar 27, 2019
    + more versions
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    (2019). Land cover change maps for Mato Grosso State in Brazil: 2001-2017 (version 3) - Dataset - B2FIND [Dataset]. https://b2find.eudat.eu/dataset/7453d3c7-379e-547b-98ff-ba811c564b7c
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    Dataset updated
    Mar 27, 2019
    Area covered
    State of Mato Grosso, Brazil
    Description

    These data sets include yearly maps of land cover classification for the state of Mato Grosso, Brazil, from 2001 (2000-09-01 to 2001-08-31) to 2017 (2016-09-01 to 2017-08-31), based on MODIS image time series (collection 6) at 250-meter spatial resolution (product MOD13Q1). Ground samples consisting of 1,892 time series with known labels are used as training data for a support vector machine classifier. We used the radial basis function kernel, with cost C=1 and gamma = 0.01086957. The classes include natural and human-transformed land areas, discriminating among different agricultural crops in state of land cover change maps for Mato Grosso State in Brazil. The results provide spatially explicit estimates of productivity increases in agriculture as well as the trade-offs between crop and pasture expansion. --- The correlation coefficients between the agricultural areas classified by our method and the estimates by IBGE (Brazil's Census Bureau) for the harvests from 2001 to 2017, were equal to 0.98. At the state level the soybean, cotton, corn and sunflower areas had a correlation equal 0.97, 0.85, 0.98 and 0.80. --- The areas classified as forest were compared with the Hansen et al. (2013, doi:10.1126/science.1244693) mapping for the year 2000. In order to separate the forest areas, we examined the areas with more than 25% tree cover on the Hansen et al. (2013, doi:10.1126/science.1244693) map. We found that 98% of the pixels classified as forest match the pixels indicated by Hansen et al. (2013) as having more than 25% tree cover. When we joined the cerrado and forest classes, 83% of the pixels match the pixels by Hansen et al. (2013) as having more than 25% tree cover. --- The pixels labeled as pasture were compared to the pasture mapping done by Parente et al. (2017, doi:10.1016/j.jag.2017.06.003). We found that 80% of the pixels classified as forest match the pixels indicated by Parente et al. (2017, doi:10.1016/j.jag.2017.06.003) for the state of Mato Grosso. --- In the land cover change maps for Mato Grosso State in Brazil version 3, we applied a methodology to deal with trajectories in classified maps. This methodology for reasoning about land-use change trajectories, called LUC Calculus, has been discussed in previous work (Maciel et al., 2018, doi:10.1080/13658816.2018.1520235). For reducing the temporal variability, we use the entire history of the study area considered as a set of land-use trajectories (from 2001 to 2017). For reasoning about this, we adopt the reference date 2001 and we used two-step post-processing, first applying masks and rules on the initial classified map (2001) and then land-use rules using LUC Calculus for the all years (2001-2017). The first-step post-processing was performed on the initial classified map (2001). We applied the forest mask to the classified map of the year 2001. This forest mask comes from the PRODES Project (http://www.obt.inpe.br/OBT/assuntos/programas/amazonia/prodes). In the non-forest, the appearance of secondary vegetation is not mapped. An additional set of rules was applied on the initial map using two sets of maps: PRODES map of the year 2001 and Cerrado map of 2000 (http://www.obt.inpe.br/cerrado). This mask of the Cerrado biome depicts the Cerrado within two classes: Anthropized Cerrado and Non-Anthropized Cerrado. The second-step post-processing was carried on the entire years from the classified map (2001-2017) using the LUC Calculus method. First, we elaborate a set of rules defined by experts in Amazon and Cerrado biomes. These rules express information about different trajectories of land-use change in MT that represent an irregular transition between classes. The rules used was: Forest (F), Cerrado (C), Pasture (P) and Soybean (S) 1. C -> F to C -> C 2. C -> C -> P -> C to C -> C -> C -> C 3. C -> C -> S -> C to C -> C -> C -> C 4. P -> P -> C -> C -> P to P -> P -> P -> P -> P 5. F -> C -> F -> F to F -> F -> F -> F 6. F -> F -> C -> F to F -> F -> F -> F 7. F -> C -> F to F -> F -> F 8. F -> C to F -> F 9. F -> F -> P -> F to F -> F -> P -> SV 10. P -> P -> F -> P to P -> P -> SV -> P The sequential application of the rules is able to ensure the temporal consistency among classes over the years. The class changed is highlighted with "*". From rule 1 to 8 we assume the reference date, 2001, as the starting point to find the class to will be changed. Rules 9 and 10 exemplify scenery where new class secondary vegetation (SV) occurs. The trajectory methodology enables us to include a new class called 'secondary vegetation'. This class represents a significant portion of the deforestation areas that have fallen into disuse or abandoned and have regrown as secondary forest. --- The following data sets are provided: (a) The classified maps in compressed TIFF format (one per year) at MODIS resolution. (b) A QGIS style file for displaying the data in the QGIS software (c) An csv file with the training data set (1,892 ground samples). --- The software used to produce the analysis is available as open source on https://github.com/e-sensing. --- Note: The TIFF raster files use the Sinusoidal Projection, which is the same cartographical projection used by the input MODIS images. When opening the TIFF raster maps in QGIS, to ensure correct navigation please use the Sinusoidal Projection, by selecting in QGIS projection menu, the following option: "Generated CRS (+proj=sinu +lon_0=0 +x_0=0 +y_0=0 +a=6371007.181 +b=6371007.181 +units=m +no_defs)"

  11. a

    GIS EXAM DCG-262-SEPT2023

    • africageoportal.com
    Updated Jul 21, 2025
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    Africa GeoPortal (2025). GIS EXAM DCG-262-SEPT2023 [Dataset]. https://www.africageoportal.com/datasets/africageoportal::gis-exam-dcg-262-sept2023
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    Dataset updated
    Jul 21, 2025
    Dataset authored and provided by
    Africa GeoPortal
    Description

    NDVI Analysis for Kiambu county. The NDVI was computed using Landsat 8 bands: NDVI=(Band 5(Nir)-Band 4(red))/(Band 5+Band4). The NDVI image was classified into four vegetation health classes. Each class was assigned a specific color using the Qgis symbology tools. The output was a ndvi Kiambu map.Land use Land cover Mapping. Combine all the satellite bands using the band set in the SCP.Landsat image bands were stacked using the Build Virtual Raster tool in QGIS.This formed a multispectral image for further analysis. Clip the image to area of extent. The study area was clipped the map canvas extent. Supervised Classification for LULC Map was performed using the Semi-Automatic Classification Plugin (SCP):Training samples were created for land cover classes: water, vegetation, built-up, bare land.Classification method used: Maximum LikelihoodA classified LULC map was produced, representing each pixel with its respective class.Output: clipped_stack.tif (study area image)

  12. e

    Detailed vegetation maps of the Brazilian Savanna (Cerrado) biome produced...

    • b2find.eudat.eu
    Updated Aug 27, 2022
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    (2022). Detailed vegetation maps of the Brazilian Savanna (Cerrado) biome produced with a semi-automatic approach - Dataset - B2FIND [Dataset]. https://b2find.eudat.eu/dataset/774cd7d9-92f9-5368-9a32-c16d0aaf721b
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    Dataset updated
    Aug 27, 2022
    Area covered
    Cerrado
    Description

    The Cerrado biome in Brazil covers approximately 24% of the country. It is one of the richest and most diverse savannas in the world, with 23 vegetation types (physiognomies) consisting mostly of tropical savannas, grasslands, forests and dry forests. It is considered as one of the global hotspots of biodiversity because of the high level of endemism and rapid loss of its original habitat. This dataset includes maps of the vegetation in the Cerrado in two different hierarchical levels of physiognomies. These physiognomies were defined by Ribeiro and Walter (2008) and consist in a hierarchical classification structure. The first hierarchical level (referred as level-1) consists on three classes: grassland, savanna and forest; which are further split in a total of 12 sub classes in level-2. The maps were produced under the scope of the project "Development of systems to prevent forest fires and monitor vegetation cover in the Brazilian Cerrado” (WorldBank Project #P143185) – Forest Investment Program (FIP) - in collaboration with the Earth Observation Lab from the Humboldt University. The methodological approach was published at: doi:10.5194/isprs-archives-XLIII-B3-2020-953-2020, 2020. The goal was to analyze the potential of Landsat Analysis Ready Data (ARD) in combination with different environmental data to classify the vegetation in the Cerrado in two different hierarchical levels. The field data used for training and validation are included in this dataset. The classification accuracy was assessed using Monte Carlo simulation, in which 1000 simulations were carried out by randomly selecting 70% of the samples to train the random forest (RF) classification model, while the remaining 30% were used for validation. In each iteration, a confusion matrix was calculated, and the average confusion matrix was used to derive the overall accuracy and the class-wise f1-scores. On the first hierarchical level, with the three classes savanna, grasslands and forest, our model results reached f1-scores of 0.86, 0.87 and 0.85 leading to an overall accuracy of 0.86. In the second hierarchical level, we differentiated a total of 12 vegetation physiognomies with an overall accuracy of 0.77. The following class f1-scores for the vegetation classes in the second hierarchical level were: Campo limpo: 0.687, Campo rupestre: 0.528, Campo sujo: 0.851, Cerradao: 0.658, Cerrado rupestre: 0.847, Cerrado sensu stricto: 0.815, Ipuca: 0.830, Mata riparia: 0.743, Mata seca: 0.611, Palmeiral: 0.907, Parque de Cerrado: 0.966, Vereda: 0.364. The following data sets are provided here: (a) the classified maps in compressed TIFF format (one per hierarchical level) at 30-meters spatial resolution, (b) a QGIS style file for displaying the data in the QGIS software, (c) a csv file with the training data set (2,828 ground samples). The software used to produce the maps is available as open source on https://github.com/davidfrantz/force.Note: The TIFF raster files use Geographic coordinate system with the WGS 84 datum.

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Statistics Canada (2021). QGIS Training Tutorials: Using Spatial Data in Geographic Information Systems [Dataset]. https://open.canada.ca/data/en/dataset/89be0c73-6f1f-40b7-b034-323cb40b8eff

QGIS Training Tutorials: Using Spatial Data in Geographic Information Systems

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htmlAvailable download formats
Dataset updated
Oct 5, 2021
Dataset provided by
Statistics Canada
License

Open Government Licence - Canada 2.0https://open.canada.ca/en/open-government-licence-canada
License information was derived automatically

Description

Have you ever wanted to create your own maps, or integrate and visualize spatial datasets to examine changes in trends between locations and over time? Follow along with these training tutorials on QGIS, an open source geographic information system (GIS) and learn key concepts, procedures and skills for performing common GIS tasks – such as creating maps, as well as joining, overlaying and visualizing spatial datasets. These tutorials are geared towards new GIS users. We’ll start with foundational concepts, and build towards more advanced topics throughout – demonstrating how with a few relatively easy steps you can get quite a lot out of GIS. You can then extend these skills to datasets of thematic relevance to you in addressing tasks faced in your day-to-day work.

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