GPS: what limits the _rate_ of change in altitude?
Hiking & ActivitiesWhat altitude does GPS limit? Most civilian GPS receivers will stop working at an altitude of roughly 18,000 m ~ 60,000 ft. This prevents most trackers from being able to update your payload’s position above 18,000 m. Sometimes it is possible to obtain specialized GPS receivers (more expensive) that work above 18,000 m. How does
Changing min and max values for raster layer in QGIS
Hiking & ActivitiesHow do I change values in raster QGIS? Editing DEM pixels values in QGIS using Serval Plugin Probe button allows you to check the cell values in the raster. Drawing button activate the ability to modify the values of a raster cell. Clicking on the Set raster cell values to NoData button and then in
Removing file from os results in WinError 32
Hiking & ActivitiesWhat is Win Error 32? The Code 32 error is one of several Device Manager error codes. They’re usually caused when the start type for the hardware device’s driver is disabled in the registry. The error could apply to any hardware device in Device Manager but most of them appear on optical drives like Blu-ray,
Using R to subtract polygon area of one shapefile from another?
Hiking & ActivitiesHow do you calculate the area of a polygon in R? Load your multipolygon in R, make sure it has an appropriate coordinate system, then use st_area() , which returns the area of each polygon (row) in your multipolygon. > df2 % group_by(id) %>% summarize(st_union(geometry), area_id = sum(area)) > merge(df, st_drop_geometry(df2), by = “id”, all.
Geoserver WFS request resultType=hits
Hiking & ActivitiesWhat is WFS in GeoServer? The Web Feature Service (WFS) is a standard created by the Open Geospatial Consortium (OGC) for creating, modifying and exchanging vector format geographic information on the Internet using HTTP. A WFS encodes and transfers information in Geography Markup Language (GML), a subset of XML. How do I publish a WFS
SELECT DISTINCT from table in Geoserver SQL view
Hiking & ActivitiesHow do I get the distinct value from a table in SQL? The SELECT DISTINCT statement is used to return only distinct (different) values. Inside a table, a column often contains many duplicate values; and sometimes you only want to list the different (distinct) values. How to SELECT distinct count in SQL Server? The correct