Questions tagged [units]
For questions regarding the increments used in measuring values.
140 questions
1 vote
0 answers
48 views
Converting any render unit to meters in specific scale using PyQGIS
I am trying to convert render units (i.e. Millimeters, Inches, Points, Pixels) to Meters using a specific scale (i.e. 1:1000) when the active canvas scale differs (i.e. 1:5000) It works as expected if ...
- 6,937
0 votes
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The unit of `glob_rad` in `r.sun` with a CRS in feet
I don't know much about GRASS, but I've been calling out to it from R with rgrass to use r.sun. In particular, I use r.sun mode 2 to turn a digital-surface-model raster that I built from Rhode Island ...
- 145
1 vote
1 answer
111 views
Number formatting in Elevation Profile in Print Composer for QGIS
I have created the following Elevation Profile in QGIS based on a DEM featuring its distance in metres. As you can see, the distance axis displays the values in metres, which, for the sake of the ...
- 623
1 vote
0 answers
261 views
What does unit mean in spatial reference system?
Each spatial reference system contains a definition of a unit. The rectangular coordinate systems mainly use meters, the spherical ones use degrees. You can see the unit of a srs for example here: ...
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-3 votes
1 answer
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COPERNICUS_S5P_OFFL_L3_NO2 image export convert unit to ppm
The image I exported from COPERNICUS_S5P_OFFL_L3_NO2 has values in mol/m^2 is there a way I could convert the unit to ppm? How do you Convert from Molarity (M/m2) to Parts Per Million (ppm) ?
0 votes
1 answer
81 views
Find out what type of unit is being used
I'd like to know what type of unit is being used in this example to set extents, for the user to only be able to move in France's map. example is here And the code is: const view = new View({ ...
- 101
0 votes
1 answer
163 views
Finding distance in ArcGIS Pro
I have two data sets, one is a set of points and the other is a set of lines. I am trying to run the 'near' tool to find the distance between each point and the closest line and have that distance be ...
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0 votes
0 answers
321 views
How to change scale unit with ol.control.CanvasScaleLine(), in Openlayers
I have a scale control var scaleLineControl = new ol.control.ScaleLine({}); and I can change the scale unit. However, I would like to know if it is possible to change the unit with com var ...
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2 votes
1 answer
826 views
Modifying the intervals and "offset from zero" parameter for an already-created contour line layer in QGIS
I'm trying to create a simple labeled contour line layer for a topographical map in QGIS. I've created a new layer for the contours using "Raster > Extraction > Contours" on a raster ...
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1 vote
0 answers
523 views
How To Set QGIS Map Units To Inches/Imperial?
I'm trying to recreate QGIS-equivalents of ArcMap/ArcGIS Pro maps originally created in inches/imperial units. I wish to retain the same units for the QGIS maps but have run into problems. I can't ...
- 31
2 votes
0 answers
346 views
Change vertical unit in a LAS/Z file with PDAL
I am using pdal translate to filter and transform some lidar files. One issue we have are the vertical units. Sometimes they are correctly specified, sometimes they are not, and sometimes they are ...
- 1,334
1 vote
0 answers
2k views
Meaning of scale ratio in QGIS
I am new to using QGIS and I cannot find definitive information about how to intellectually use the scale ratio shown at the bottom toolbar. There is a number of predefined scales, with the format ...
- 11
2 votes
1 answer
1k views
What unit is represented by OD Matix costs (in QNEAT3 within QGIS 3.6 Noosa)?
Some background to explain what I have done, and thus my current question (at the end). I am trying to find a way to get a list of the distances between sites of a certain class to the nearest site of ...
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1 vote
0 answers
417 views
Incorrect measurements when using "Create Grid" tool in QGIS
I am using the "Create Grid" tool in QGIS to simply create a 25x150ft grid. I am using EPSG:3857. When I select my parameter I want and run the tool, I double-checked the dimensions with the ...
- 1,456
7 votes
4 answers
11k views
What are the units in CRS EPSG:4326?
I have been searching for an answer to this question for a while now, and for some reason, I can't seem to find it. How are the units defined in the EPSG:4326 system? Are longitude and latitude ...
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