on February 23, 2023
QGIS 3 has reworked tools for loading layers. Is there and easy way to load data from PostGIS views
Geographic Information SystemsHow do I add data to PostGIS in QGIS? Connect PostGIS to QGIS Just open Layer > Add Layer > Add PostGIS Layer. From there you can enter the details about your database and connect it. What is the file format that you need to create layers in QGIS application? ESRI Shapefiles. The standard vector
on February 23, 2023
Symbol levels not working with Illustrator export
Geographic Information SystemsWhy is my Illustrator File exporting pixelated? If your illustration appears to be very blurry after exporting, it may be due to the illustration’s pixel size. To change your illustrations pixel size: Click on the illustration from your gallery page. Click export from the top right corner. How do I export from Illustrator without losing
on February 23, 2023
Changing raster source using QGIS
Geographic Information SystemsHow do I change raster data in QGIS? You have two different options to change the raster symbology: Within the Layer Properties dialog, by right-clicking on the layer in the Layer tree and selecting the Properties option. Then switch to the Symbology tab. By clicking on the. Open the Layer Styling panel button right above
on February 23, 2023
Most recent tectonic plate data
Geographic Information SystemsWhat is the most recent evidence of plate tectonics? Rare minerals show evidence of an ancient subduction zone. A unique rock formation in China holds clues that tectonic plates subducted, or went underneath other plates, during the Archean eon (4 billion to 2.5 billion years ago), just as they do nowadays, a new study finds.
on February 23, 2023
Creating a buffer based on the number of parallel lines
Geographic Information SystemsHow do you make a buffer inside a polygon? How To: Use the ArcMap Buffer Wizard to create an inside buffer for a polygon Click the Customize menu and click Customize Mode. In the Customize dialog box, click the Commands tab, and in the Show commands containing box field, type Buffer Wizard. The Buffer Wizard
on February 23, 2023
Calculating distortion on Equirectangular Projection
Geographic Information SystemsWhat is the formula for equirectangular projection? The top figure, called the equi-rectangular projection is perhaps the simplest of all map projections; its formula is T(ϕ, θ)=(θ, ϕ). The other is Lambert’s equal area cylindrical projection; its formula is T(ϕ, θ)=(θ, sin(ϕ)). Is there distortion in a conformal projection? A map that preserves shape is
on February 23, 2023
Creating snow cover frequency map in Google Earth Engine
Geographic Information SystemsHow do I create a NDVI map in Google Earth Engine? Calculate NDVI from Recent Sentinel Satellite Imagery in Google Earth Engine Summary. Get started in Earth Engine (new users) Import Sentinel-2 Imagery within your study area. Calculate NDVI from the Sentinel-2 imagery. Select the Most Recent Image. Add the Most Recent NDVI Image to
on February 23, 2023
Local ENU point of interest to ECEF
Geographic Information SystemsHow to convert ECI to ECEF? In general you will need 4 steps to convert from ECI to ECEF: Calculate earth’s precession. Calculate earth’s nutation. Account for earth’s rotation including UTC-UT1 offset. Account for polar motion. Convert to lan/lon if desired. What are enu vs ned coordinates? It consists of three coordinates: one represents
on February 23, 2023
Getting slope from DEM.tif using Spatial Analyst
Geographic Information SystemsHow is slope calculated from a dem? Create a slope map from the DEM layer. Navigate to System Toolboxes > Spatial Analyst Tools > Surface > Slope. Select the output of the Topo to Raster tool as the input raster. Specify the location of the output raster. Select the output measurement. Click OK. A slope
on February 23, 2023
Calculating the mean elevation of a DEM in QGIS
Geographic Information SystemsHow to get elevation data from DEM in QGIS? Method Ensure that DEM and 2d_zsh line layer files are opened, and the Point Sampling Tool plugin has been installed (Plugins >> Manage and Install Plugins >> Point Sampling Tool) Convert line vertices to points, using the preferred method described in the QGIS Convert Lines to