on February 19, 2023
Layer Group cannot be added into QGIS
Geographic Information SystemsHow do I add a group in QGIS? There are two ways to do this: Press the icon to add a new group. Type in a name for the group and press Enter . Now click on an existing layer and drag it onto the group. Select some layers, right-click in the legend window and
on February 19, 2023
Assigning elevation data to GPX from LIDAR data
Geographic Information SystemsHow to create dem from LiDAR data? Quote from video: So go to data management tools and under layers and table views click here make ls data set layer. And input your lighter data set here and now we are going to rename it as ground. Does GPX file have elevation? gpx files often come
on February 19, 2023
Downloading data directly onto Google Earth Engine (GEE)
Geographic Information SystemsHow do I import data into Google Earth Engine? Import spreadsheet data On your computer, open Google Earth Pro. Click File. Browse to the location of the CSV file and open it. In the box that appears, next to Field Type, choose Delimited. Next to Delimited, choose Comma. Use the preview pane to ensure your
on February 19, 2023
Extract left part of field with regexp_substr after two specific charaters
Geographic Information SystemsWhat does REGEXP_SUBSTR () do in SQL? Returns characters from a string by searching it for a regular expression pattern. REGEXP_SUBSTR is similar to the SUBSTRING function function, but lets you search a string for a regular expression pattern. For more information about regular expressions, see POSIX operators. What is the regular expression to extract
on February 19, 2023
Getting the center of a feature collection in GeoJSON?
Geographic Information SystemsHow do I access GeoJSON properties? GeoJSON object properties are in OL accessible through . get(propertyName) method. For example, if your GeoJSON has property named otherParameter , you can access it in OL with geojsonLayer. get(‘otherParameter’) . What are coordinates in GeoJSON? The coordinate reference system for all GeoJSON coordinates is a geographic coordinate reference
on February 19, 2023
GPS point elevation vs Contours layer elevation
Geographic Information SystemsWhat’s the difference between elevation and contour lines? Topographic maps also have a vertical scale to allow the determination of a point in three dimensional space. Contour Lines: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in
on February 19, 2023
Joining spatially AND on attribute in ArcGIS ModelBuilder?
Geographic Information SystemsHow do I merge two attributes in Arcgis? Merge existing features On the Edit tab, in the Features group, click Modify . Expand Construct and click Merge . Click the Existing Feature tab. Click Select. In the pane, add or remove features from the selection. Configure the attributes fields and field values for the merged
on February 19, 2023
Conversion of French Lambert 1 Nord to Lat/Lon
Geographic Information SystemsHow to convert northing easting coordinates to longitude latitude? Subtract the easting and northing by their respective offset values. (The values will be in meters.) Find the longitude of the given point by finding the destination point given the base point, the absolute value of the easting, and the bearing of 90 degrees if the
on February 19, 2023
REST API pagination with OGR
Geographic Information SystemsHow to add pagination in REST API? Set the limit parameter The endpoint we’re going to hit here to specifically get the pages in that space is /rest/api/space/{spaceKey}/content/{type} , with the type being page (you could also use blogpost ). Note the limit parameter in this call is set to 5, so the response shows
on February 19, 2023
How to calculate zonal statistics from multi-band raster for each polygon using python?
Geographic Information SystemsHow do you calculate zonal statistics in Python? Zonal Statistics Algorithm with Python in 4 Steps Load raster data and vector polygons. Rasterize polygon features. Mask input data to polygon extent. Calculate zonal statistics for the polygon extent. How does Qgis calculate zonal statistics? Input your raster layer in the Raster layer parameter as