on February 8, 2023
Why is QGIS project in recent projects greyed out?
Geographic Information SystemsHow do I turn off news in Qgis? The news feed can be disabled via a QSettings key (for enterprise/offline installs/those concerned about phone home behavior etc) An option is added in the feed panel to “never show QGIS news items” How do I delete a project in Qgis? To be able to delete the
on February 8, 2023
Why meridian time zones are not uniform?
Geographic Information SystemsWhy do time zones not exactly follow meridians? Time zones tend to follow the boundaries between countries and their subdivisions instead of strictly following longitude, because it is convenient for areas in frequent communication to keep the same time. Why are the time zone lines not straight? Time zones are not always in straight lines
on February 8, 2023
QGIS label: expression to show the maximum value to label in the map irrespective of the scale
Geographic Information SystemsHow do you do rule based labeling in QGIS? Quote from video: So the rule is here. So with this i'll say again this is a rift valley like that. And then here. We'll just do the same. So i want to filter. How do I make labels not overlap in QGIS? In the Layer
on February 8, 2023
Postgis spatial index not being used
Geographic Information SystemsWhy index is not being used in PostgreSQL? The two main reasons. There are two main reasons that Postgres will not use an index. Either it can’t use the index, or it doesn’t think using the index will be faster. Working out which of these is the reason in your case is a great starting
on February 8, 2023
Extract values at point locations from ArcGIS Server layer
Geographic Information SystemsHow do I extract raster values at point locations in ArcGIS? To extract values from multiple rasters or a multiband raster dataset, use the Extract Multi Values To Points tool. The interpolation option determines how the values will be obtained from the raster. The default option is to extract the exact cell value at the
on February 8, 2023
Convert polygon to raster and give value to null cells
Geographic Information SystemsHow do I convert a polygon to raster in Arcmap? Usage. Any feature class (geodatabase, shapefile, or coverage) containing polygon features can be converted to a raster dataset. The input field type determines the type of output raster. If the field is integer, the output raster will be integer; if it is floating point, the
on February 8, 2023
Selecting nearest features based off another layer and sum using ArcGIS Pro
Geographic Information SystemsHow do I copy features from one layer to another in Arcgis pro? You can also press Ctrl+C to copy features and Ctrl+Alt+V to open the Paste Special window. The Paste Special window appears. At the top of the window, the Paste option may be visible. It is only visible if features with different geometry
on February 8, 2023
Shape ID is lost after converting a shapefile into a raster in QGIS
Geographic Information SystemsHow do I convert a shapefile to a raster in Qgis? To convert a vector to a raster format, QGIS provides the Rasterize tool. This tool converts a shapefile to a raster and applies the values in a specified attribute field to the cell values. To access the Rasterize tool, click on Rasterize (Vector to
on February 8, 2023
Which GUI system for apps?
Geographic Information SystemsWhat is a GUI for an app? A graphical user interface is an application that has buttons, windows, and lots of other widgets that the user can use to interact with your application. A good example would be a web browser. It has buttons, tabs, and a main window where all the content loads. What
on February 8, 2023
How to extract the maximum value from an array in the QGIS Field Calculator?
Geographic Information SystemsHow do you find the maximum value of an array? To find the largest element from the array, a simple way is to arrange the elements in ascending order. After sorting, the first element will represent the smallest element, the next element will be the second smallest, and going on, the last element will be