qgisqgis-expression
I'm using QGIS 3.22.11-Białowieża and, in the print composer, I need to split the title of the legend into two lines. With the expression string builder, I've written this simple code:
'Line 1' || '\n' || 'Line 2'
Is it possible to change the spacing between lines?
I don't think you can - not with a text box at least. (QGIS 2.18.3) By text box, I'm assuming you mean 'label'
But you can use an HTML frame, and a bit of CSS instead.
This will give you more typographic control, and let you define line spacing in pixels, mm, ems etc.
Something like this, which double-spaces lines. You can use the line-height css style to change the spacing...
<style>
p {
line-height:2em;
}
</style>
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.
</p>
Add an extra symbol to each symbol in your styling. This has to be a transparent symbol of constant size, roughly equal to the largest symbol in your cartography. A bit like this:
but there the second symbol is a white circle with an outline (purely so you can see it!), of size 5.8mm. Make it transparent fill, and no outline. Do that for all your symbols. Then it won't show up in the map on the map composition, but it will influence the spacing of the legend:
Compare with:
which yes, is a bit ick (ignore the slight change in blue symbols for 205, I'd been mucking about with it).
I'm surprised regular spacing isn't already an option (maybe I couldn't find it either!). I wonder if there's a request for equally-spaced legend items already, the print composer is getting some love soon.
Actually, after asking if this could be a feature request, it turn out its already there but I couldn't find it. Use the symbol height option in the legend options. Here:
Increasing the "Symbol Height" here to something bigger than your largest symbol should result in evenly spaced legend items.
Best Answer
At the bottom of the
Spacingsub-menu in the item properties of the Legend, there is an option calledLine space.