qgis
I was creating an arrow for a line layer. So I was adding the triangle as a single marker to the line. So far so good. But when I would like to create my own single-marker symbol or svg marker how can I add these own symbols to QGIS?
Where have these own symbols to be stored? So that they are added to the single marker or svg marker selection list?
I could not found the folder by searching for .svg files? ;(
What's the approach to put my own single marker or svg marker to the selection list?
Perhaps there are better ways of doing this, but for what it's worth:
Create a line layer for the fine, broken lines and draw the lines.
Create a line layer for the solid lines and draw the solid lines, snapped to the fine lines. Draw the lines one segment at a time in the direction that you wish the arrows to point.
Style the solid lines with arrowheads, as shown in the picture.
Horrible, I know. Hope you don't have too many to draw:) Nick.
If you want to use a field in attribute table, you should select the field directly in the Data defined override which has the angle value. The field should be of double/integer type not string field type. In the following figure I used at first Single Symbol and select Data defined override beside the rotation field, as you can see below:
Then, I changed the style from Single Symbol to Graduated and select another field (in your case slope field), as you can see below.
Best Answer
From the SVG marker dialog you can select a different SVG file. Also, its here you will see where the default file is stored.
you might wanna check my post from a few days about additional libraries of SVG symbols:
Is there a SVG symbol library for qgis?