Linked Questions

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1answer
342 views

Load Raster Values into Shapefile [duplicate]

I have a shapefile containing many points. Some of these points fall within an area for which I have raster data. I would like to load the values of the raster which underlie each point into the ...
0
votes
0answers
112 views

Converting points to raster and back again in QGIS? [duplicate]

To convert raster grids to vector points In QGIS there we have different possibilities (grass tool "to.vect"; saga tools "grid values to points"). My problem is a little bit complicated. In the ...
1
vote
0answers
102 views

How to extract elevation data from ASTER/SRTM? [duplicate]

I just want to know if there are any other tools available in QGIS apart from the Point Sampling tool to extract elevation data from ASTER/SRTM/CartoDEM (for India) data? When I convert these images ...
7
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3answers
2k views

Seeking software for opening .img files?

I have some cpc precipitation data stored in IMG format. Could anyone suggest a software beside ERDAS imagine or Arcgis which can be freely downloaded?
1
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3answers
1k views

Labelling contour lines in QGIS?

I need to label contour lines in QGIS 2.14. I've tried a few things, including Choosing only one contour line to label in QGIS? but it labels with the IDs instead of altitude. EDIT: I've created the ...
0
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1answer
4k views

Project points to a vector layer and get z elevation at QGIS

I have one point file and one dtm vector file (with elevation contours as well as point elevation information). How can I project points to the vector file and get z elevation of them?
7
votes
1answer
2k views

How to get elevation profile from .tif dsm on the web map?

I have my dsm .tiff file, pixels are floating point 32bit values giving the terrain elevation in metres. I need to create a web map where user can draw a path and get elevation profile for that path. ...
2
votes
2answers
1k views

Extracting raster values at points for GRASS GIS

I have points shapefile and a raster file. For each point, I want to extract the raster value which overlaps that particular point. This has been done in QGIS (link below) but I was looking for a ...
6
votes
1answer
563 views

Extract many or clustered cells attributes around points using SAGA GIS?

My question is similar to Extracting raster values at points using Open Source GIS?, but perhaps more complex. How to extract the attributes of clustered cells around a point/points? For example,...
1
vote
1answer
665 views

Alternative profile graphs for ArcGIS

Anybody know an alternative to profile graph option for ArcGIS 10.2? 3D Analyst can produce a profile, however it's extremely bare bones and doesn't include a scaling option. Does anybody know an ...
2
votes
1answer
239 views

Split millions of points in shp with 100'000 points each [closed]

I havie over 8 million points in a shapefile. Now I would like to split these 8 mio points into parts of 100'000 points each, in order to facilitate further calculations with these points. In the end ...
2
votes
2answers
79 views

Adding slope values to attribute table (QGIS 3)

I have a DEM raster and some points (one .shp for all points) plotted on it. I would like to know if there is a way to add the slope value of the pixel that each point is located in the attribute ...
7
votes
1answer
149 views

How can I get a numerical (or value) display for equal intervals in a layer?

I'm looking to classify regions on a map by the amount of light pollution in the area. I have the varied intensities (0 through 60) plotted using a color map, but is there anyway that instead of a ...
1
vote
2answers
56 views

Comparing several values within each cell of a DEM

I am working with a DEM and got a GPS line of my working area. I converted the GPS line into single measurement points. Now I want to compare each of these GPS points with the corresponding elevation ...
1
vote
1answer
68 views

Selecting Features in Visible Viewshed Areas using QGIS?

In QGIS 3.2 I have a viewshed raster and a shapefile with point features I'd like to select the points that intersect the visible areas of my viewshed. Is there a way to extract a vector of my ...