QGIS 101: Contour Lines from 30m DEM

Geosearch International
Geosearch International
9.8 هزار بار بازدید - 4 سال پیش - ** This video is dedicated
** This video is dedicated to Abu Asal, who passed away last week in Amman/Jordan. **

In this video I will show you how to prepare contour lines from a set of regular data points – the SRTM 30m elevation model - which is a raster data set. You will learn:
  - How to find the correct DEM for your project area.
  - How to set up a topography colour ramp & enhance it to show the local topography.
  - How to smooth the DEM raster using the Gaussian filter from SAGA.
  - How to extract contour lines from the smoothed DEM.
  - How to use the Geometry Generator to hide some contour lines.
  - How to use the Geometry Generator to control contour line thicknesses.
  - How to label the contour lines with custom formatted text.
  - How to save the contours and formatting inside a QGIS GeoPackage file.
  - How to save the settings in a Layer Style File, so you can use it for other projects.

Link to the Contour Layer Style File (QML): https://bit.ly/33GzsvB
Link to YouTube Video: QGIS 101: Contour Lines from 30m DEM

This video is part of the online QGIS 101 training course.
For more videos on QGIS, see the QGIS 101 Playlist: QGIS 101

In the next video we will look at how to contour point data.

#QGIS #ContourLines #SRTM
4 سال پیش در تاریخ 1399/09/08 منتشر شده است.
9,824 بـار بازدید شده
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