on December 25, 2022
How to calculate Percentages of NDVI Classes
Geographic Information SystemsHow do you calculate NDVI change? NDVI is calculated with the following by dividing the difference of NIR and RED by the sum of NIR and RED. Essentially, healthy vegetation reflects a lot of NIR and absorbs most of the RED, while unhealthy vegetation reflects less NIR and less RED. How to calculate NDVI in
on December 25, 2022
Is starting names with numbers a bad data naming convention?
Geographic Information SystemsWhat is a poor file naming convention? File naming best practices: Avoid special characters or spaces in a file name. Use capitals and underscores instead of periods or spaces or slashes. Use date format ISO 8601: YYYYMMDD. Include a version number (Creamer et al. Can a filename starts with a number? A file name must
on December 25, 2022
Google Earth import terrain
Geographic Information SystemsHow do I import terrain into Google Earth? Add your terrain map image to the document by selecting the “File > Import” menu in the Mac version; tap on the “hamburger” button and choose “Import > From Photos” or “Import > From File” on an iPhone / iPad; click the “hamburger” button and select “Import
on December 25, 2022
Blank Vector Selection Dropdown in QGIS GRASS Plugin
Geographic Information SystemsHow do I use grass plugin in Qgis? Loading GRASS raster and vector layers Start QGIS. If not already done in a previous QGIS session, load the GRASS plugin clicking on Plugins ‣ Manage Plugins and activate. In the GRASS toolbar, click the Open mapset For Gisdbase , browse and select or enter the path
on December 25, 2022
How can I define a relationship between GTFS’ trips and calendar/calendar_dates tables?
Geographic Information SystemsHow does GTFS work? A GTFS feed is composed of a series of text files collected in a ZIP file. Each file models a particular aspect of transit information: stops, routes, trips, and other schedule data. The details of each file are defined in the GTFS reference. An example feed can be found in the
on December 25, 2022
Projection using ArcPy with ArcGIS Pro
Geographic Information SystemsCan you use ArcPy with ArcGIS Pro? The ArcPy package is part of the default Python distribution arcgispro-py3 that is provided with ArcGIS Pro and ArcGIS Server. Customization of the arcgispro-py3 Python environment through the addition of Python packages or other modifications is not recommended. How do I show projections in ArcGIS Pro? Setting and
on December 25, 2022
Creating relationship class in QGIS for uploading to ArcGIS Online?
Geographic Information SystemsHow do I create a relationship class in ArcGIS online? In the Catalog tree, right-click the geodatabase or feature dataset in which you want to create the new relationship class and point to New > Relationship Class. Type the name for the new relationship class. Click the Origin table or feature class. Click the Destination
on December 25, 2022
Calculating LST from Landsat 8 image collection in Google Earth Engine?
Geographic Information SystemsHow to calculate LST from Landsat 8 in Google Earth Engine? addLayer(ndvi, ndviParams, ‘ndvi’); } // //select thermal band 10(with brightness tempereature), no BT calculation var thermal= image. select(‘B10’). multiply(1000); Map. addLayer(thermal, imageVisParam, ‘thermal’); // find the min and max of NDVI { var min = ee. How to calculate LST from Landsat 8? How
on December 25, 2022
Calculate a river system with the field calculator in QGIS
Geographic Information SystemsHow do I use the field calculator in QGIS? Quote from video: And go to open attribute. Table. Then next I want to click on the pencil button here that will toggle edit mode on this is what it looks like when it's on if. How do you measure the length of a river in
on December 25, 2022
Merge polygon without attribute (in field) with nearest polygon with attribute
Geographic Information SystemsHow do I merge adjacent polygons in ArcGIS? Note: Click the Edit tool. on the Editor toolbar. Click the features you want to merge. The features must be from the same layer. Click the Editor menu and click Merge. Click the feature that the features will be merged into and will supply the attributes for