How do I make KML overlays appear in OpenLayers at all zoom levels?
Hiking & ActivitiesWhat is the maximum zoom level in OpenLayers? The available zoom levels are determined by maxZoom (default: 28), zoomFactor (default: 2) and maxResolution (default is calculated in such a way that the projection’s validity extent fits in a 256×256 pixel tile). What is resolution in OpenLayers? OpenLayers resolutions are meters per pixel so if 10mm
Configure new SQL view doesn’t appear for different DB’s in the same PostGIS Database
Hiking & ActivitiesHow to view multiple databases in Postgres? A single Postgres server process can manage multiple databases at the same time. Each database is stored as a separate set of files in its own directory within the server’s data directory. To view all of the defined databases on the server you can use the \list meta-command
How to merge all raster files in a folder using gdal_merge?
Hiking & ActivitiesHow do I merge raster files? Open the Mosaic To New Raster tool by navigating to ArcToolbox > Data Management Tools > Raster > Raster Dataset. Insert the raster files. Select the output location. Specify a name and extension for the output. Specify the pixel type. Specify the number of bands. How do I
Rasterization in different bands
Hiking & ActivitiesWhat is rasterization in GIS? Rasterization or Rasterisation is the task of taking an image described in a vector graphics format (shapes) and converting it into a raster image (pixels or dots) for output on a video display or printer, or for storage in a bitmap file format. What is burn in value in rasterize?
How to set up GeoDjango with PostGIS 2.0?
Hiking & ActivitiesHow to install GeoDjango? First, download the OSGeo4W installer (64bit), and run it. Select Express Web-GIS Install and click next. In the ‘Select Packages’ list, ensure that GDAL is selected; MapServer is also enabled by default, but is not required by GeoDjango and may be unchecked safely. How do you use GeoDjango? Geographic Admin Let’s
Why difference between Google Earth and QGIS distance measurement?
Hiking & ActivitiesHow accurate are Google Earth distance measurements? Measurements of distances may not be 100% accurate, especially in areas with 3D terrain and buildings. For best results, measure using a top-down view. Tips: Measurements don’t account for changes in elevation. How are Google Earth and Qgis similar and different? When assessing the two solutions, reviewers found