Standard Colors for Landcover Maps
Hiking & ActivitiesWhich colours do you use to show land? Different colours are used to represent land use on a map. Agricultural land use is represented with Yellow colour. While blue is used for commercial, red is for residential and green is used for forest lands. What is the colour code for land? The different colors used
PostGIS ST_Intersection of polygons can return lines
Hiking & ActivitiesWhat is the difference between ST_Overlaps and ST_Intersects? Use ST_Intersects to determine whether two geometries intersect. Use ST_Crosses to determine whether one geometry crosses another. Use ST_Overlaps to determine whether two geometries of the same dimension overlap. How does St_ intersection work? The ST_Intersection() function takes two ST_Geometry objects and returns the intersection set as
Seeking shapefiles of global climate/climatic zones
Hiking & ActivitiesWhat are the 3 global climate zones? According to the three cell convection model of each hemisphere the Earth neatly separates itself into three distinct climate zones; the polar, temperate, and the tropical zones. What are the 5 climate zones? one of five classifications of the Earth’s climates: tropical, dry, mild, continental, and polar.
How to convert contours and raster surface from Petrel to shapefiles and rasters that can display in ArcGIS?
Hiking & ActivitiesHow do I export a map from Petrel? Right click on the polygon in the Petrel navigation tree and select Export. How do I create a contour map in Arcgis? In order to create contours, you will need to enable the Spatial Analyst toolbar, which can be found by going to Customize > Toolbars >
Rasters not displaying correctly when opening from a project in QGIS
Hiking & ActivitiesHow do I open a raster file in QGIS? Add a raster layer into QGIS Download your chosen data layer. Use the ‘+ map’ button to add your chosen raster dataset to your collection, and click Export. Extract your download to a new folder. Open Quantum GIS (QGIS) Select Add Raster Layer. Zoom to your
Image Classification error
Hiking & ActivitiesWhat are the problems in image classification? There are following main challenges in image classification: Intra-Class Variation. Scale Variation. View-Point Variation. Occlusion. Illumination. Background Clutter. How do you solve image classification problems? From a deep learning perspective, the image classification problem can be solved through transfer learning. Transfer learning. Convolutional neural networks. Repurposing a