Questions tagged [values]
The values tag has no usage guidance.
67
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Adjusting pixel values to new pixel sum
I'm working with land use rasters in QGIS. For my application I have created rasters with pixels that have a fraction of 0-1 (for 0-100%) for a land use class. So for example in my settlement raster ...
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367
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QGIS3 - Simple automation of QGIS output - turn values on/off & print out dozens of maps
I need to make a series of maps of a single location and make a single map for each value in the layer.
I have a layout I've created with borders, texts, north arrow, and everything, with the map, and ...
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174
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Reprojecting a raster results in larger raster values than the original raster values [duplicate]
When I reproject a raster in ArcMap using the project raster function (details in the image above) to change its X,Y coordinate system from North_America_1983_Transvers_Mercator to NAD_1983_Idaho_TM, ...
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Tabulate intersection, but I need it with null values too, not just with matching intersect
I have problem with tabulate intersection tool (In ArcGIS - ArcMap 10.7.1). The number of data is 1298 with 500 m buffer. Then i have polygons, that I need to process. I run the tool, but get the ...
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3
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Digitizing and adding attribute values to the points in QGIS
I want to build a digital terrain model from nautical charts. I need to capture the points where depth is indicated in the chart, and for each point, I must attribute the depth value. One by one, to ...
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395
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Answers to be filled in by default with an expression doesn't work in QFIELD
I have set up a project in QGIS with default expressions which takes data from other fields previously filled in and automatically generates a value. It works fine when filling a form into QGIS but it ...
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245
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How to add BC-dates (age of a continent)
I want to simulate continental drifts using the time tool of QGIS (V. 3.16.0). Turns out I can only insert certain dates into my attribute table. I can't even type in the date 0000-01-01 without ...
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Replacing all "NULL" values in multiple rows with "0"
I am looking for a way to replace all "NULL"-Values throughout multiple rows/ all "NULL"-Values in an attribute table. The table is from a SHP-File (shapefile).
Is there any easy ...
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Python Code for deleting identical values from one column - ArcMap [closed]
I need Python code for deleting all identical values which are compared within one column.
As you can see in the image there are many identical values which I want to get rid of.
I tried the delete ...
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309
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QGIS Legend only with Raster Minimum and Maximum values
I want to have a mimim and maximum raster values in the legend but it appears to me a long list of all values how can I resume the legend minimum and maximum values:
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How to create a Value Map widget type to select multiple values (checklist) from the dropdown?
I have a polygon layer that represents tree/shrub planting sites that were done. As part of the attribute table, I have fields representing things like tree density, species, soil work, tree size, etc....
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Reading raster values in points gives back a generator object instead of actual value
Given a raster TIF file and a point feature class in a geodatabase, I am trying to extract the values of the raster on the points and add them as a new column on the point feature class. I am using ...
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56
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Losing pixels values when counting by value
I have a script that calculates number of pixels with NDVI values that are higher than 0.3, 0.5 and 0.7.
My code runs with no errors, but it get value 0 and doesn't really count.
what can be the ...
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300
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Extracting pixel values in different bands for different points giving NAs and not pixel values
I am working with R statistics. And I am trying to extract pixel values for each point in each Landsat bands, however, I am just getting NAs instead of getting pixel values
Does anyone have any ...
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857
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Deleting values less than 0.31 in NDVI raster layer in QGIS
In my research I have a Ndvi raster layer, and I want to delete the values corresponding to bare soil, which are those minor of 0.31. Therefore, I will obtain a new raster layer with those values ...
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