QGIS Quick Tip - 3D effect on any map

Using any elevation data to create a 3D effect for your maps.

Since I'm pretty far from the equator, my one arc second pixels are quite elongated and I need to compensate for this in my calculations. I calculate the Z-factor with the formula:

Z = 113200 x cos (latitude)

If you want to download SRTM data you can do that from:

You will find elevation data under "Digital Elevation" / "SRTM".

If you don't want to register for a login you can try the 90 meter data (not nearly as nice), or 30 meter data of the US at:

[jeffersonibhagui]

Hi Klas, thanks for this video. I recently watched the new video and got the link to this one. With respect to the z-factor, is it coordinate dependent (GCS vs PCS) or software dependent (ArcGIS vs QGIS)? I do not think it should, though. I read this article in Esri's ArcGIS Blog by Bob Booth ; "Determining a Z-factor for scaling linear elevation units to match geographic coordinate values". In the article, the z-factor was calculated using the formula: z-factor = 1/R * Cos[Latitude]. But you multiplied directly. Whereas your R (the number of meters in one degree, in radians, at the equator) is "113, 200", their own value is "111, 320". Can you please clarify this? Thank you.

[ganbaatarkh]

Thanks for the nice upload, Can you give me a bit detailed explanation about the Z factor and its significance on the maps? for example if I give a wrong Z factor, how my map would look like and so on, Thanks

[nuurussubchiyfikriy]

Before I start on this tutorial, I only have .dem type map, not .tif, can I use this?