Medium resolution

7. QGIS
for P3DM
How to extract contour lines to build a 3D Model?
• Input the new raster file. Define the
location of the output and the interval
between lines (40m by default),
tick the two boxes (attribute name
and load into canvas); Press OK.
9. To change the colors of the contour
lines, double click on the
contour lines shapefile, and in
the Style section, update the legend
type to continuous color and
the classification field to ELEV (by
default):
10. To save and or/print the contour
lines, click on New Print Composer:
TOOLBOX 6 QGIS for land use planning
8. Double click on the contour line
shapefile and display the label
section:
• Here the colors range from green
(minimum value) to red (maximum
value).
• Click on Add new map and drag a
square on the blank page to display
the contour lines.
• It is possible to modify the extent of
the representation and change the
quality of the output.
• When done, click on File / Export as
Image or PDF.
• Set the font size (here 50 in map units)
according to your map extent.
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