QGIS 101: Contour Lines from 30m DEM
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
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.
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