Create grid and display height value as label

AlexW

Dear Global mappers,

i'd like to add a grid (30m x 30m) to a siteplan but not in terms of lines, but with just the height values (one of them highlighted in the screenshot). The base data is available as raster (DTM) and also vector (pointcloud) data. The height value displayed should match the position (every 30m).

What would be the most elegant and straight forward approach in your eyes?

Thanks in advance.

Alex

DerrickW

Reporting the surface elevation in a 30m grid of a single elevation model?

Use the grid tool.

Change the labels of the points to display the elevation

Set point display to no symbol

Select the "font" option from the dialogue above. Change the label position to "center" and check the box to always display.

If needed, round the elevation value....

If you're doing something like showing cut/fill values and delta between existing ground surface and design surface, it's basically the same steps but you're calculating the delta and displaying that instead of the elevation attribute.

CarrickCon

Hi @DerrickW

Very elegant solution, well explained and well done A+ ✨

I've learn so much from this forum by reading responses to other folks questions!

Cheers,

/al

AlexW

Thanks Derrick,

really the most straight forward solution for this task.

All the best from Bavaria, Germany.

Alex

DerrickW

Welcome.

Another trick would be to resample your elevation model to 30m spacing, convert it to points and then just display the elevation. It depends on what you're trying to show, though. The first method will report a more accurate elevation at that exact location that the grid point is dropped. This 2nd approach will create more of an averaged elevation over the 30m grid (which you could also accomplish by creating grid cell area features, calculating elevation/slope stats and then displaying the average).

Export geotiff to new sample spacing (lots of different resampling options in this menu)

Resampled DEM

Convert to point cloud (there used to be an option to "create point features from elevation grid cell centers", but I can't find it)

Creates 30m points with elevations

Export to a different format (CSV, GeoJSON, SHP, etc)

Bring points back in

DerrickW

Or create 30m grid area features, calculate elevation/slope stats and display the averaged elevation (or create centroid points afterwards and use those for display)