biobase data use in qgis 3s3.amazonaws.com/.../convertingbiobasegridstorasterqgis.pdfproject the...
TRANSCRIPT
![Page 1: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/1.jpg)
BioBase Data Use in QGIS 3.X
Tutorial: Converting BioBase grids to raster
© Navico, Inc. 2019
![Page 2: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/2.jpg)
Export Depth, Vegetation, or Bottom Hardness (Composition) Grid Data from your BioBase account.
Data are exported as comma delimited point features in the universal WGS84 global coordinate system (right-click data in browser save as .csv)
![Page 3: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/3.jpg)
Add X,Y Data and specify the WGS84 coordinate system
![Page 4: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/4.jpg)
The view of unprojected ciBioBase grid data
![Page 5: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/5.jpg)
Project the data into a meter projection (UTM is pretty standard) in the Data Frame Properties. Make sure you use the correct local datum (e.g.,
NAD83 Zone 15N for Minnesota USA)
![Page 6: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/6.jpg)
http://www.ems-i.com/
If using UTMs NAD83 Datum, consult this chart to determine your zone (US Only). Datum vary widely across the globe; use one that is in accordance with
your local standard
![Page 7: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/7.jpg)
Change the Display to Meters
![Page 8: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/8.jpg)
Project the Data Frame into the appropriate local projection and datum
![Page 9: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/9.jpg)
Right click and export to .shp. Save the data in the projection of the projected Data Frame
![Page 10: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/10.jpg)
measure grid cell size using the measure line tool;
![Page 11: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/11.jpg)
Rasterize Tool;
![Page 12: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/12.jpg)
Actual individual cell sizes in BioBase vary. Overestimating actual grid cell sizes will result in blurry and inaccurate output. Underestimating will result in
empty space in between cells
![Page 13: BioBase Data Use in QGIS 3s3.amazonaws.com/.../ConvertingBioBaseGridstoRasterQGIS.pdfProject the data into a meter projection (UTM is pretty standard) in the Data Frame Properties](https://reader033.vdocuments.net/reader033/viewer/2022042200/5ea049fe077c836234752415/html5/thumbnails/13.jpg)
The conversion to raster is complete! Now a range of spatial data analyses can be conducted. To create
publication quality imagery see the “Creating Publishable Quality Imagery” tutorial