[Qgis-user] Map Corner Coordinates

[Andreas Neumann]

Hi Alanna,

It depends a bit on what you want to do.

There are map grids that you can use to label the edges of a map.

Or you can use a label with an expression. Here is one expression to 
help you get started:

with_variable(
     'mapextent',
     map_get(item_variables('Map1'),'map_extent'),
     round(x_min(@mapextent)) || ' - ' || round(x_max(@mapextent))
)

This gets the map extent of the map with the ID "Map1" (you need to set 
the ID accordingly). Using the item_variables() data structure you can 
get hold of the first map and then query one or more of the attributes 
of a referenced item in a layout.

https://docs.qgis.org/3.34/en/docs/user_manual/expressions/functions_list.html#variables 
gives you a list of available variables - but it depends of the 
expression scope you are currently in.

Hope this helps you to get started.

Andreas

On 2024-04-15 12:13, Alanna Mitchell via QGIS-User wrote:

> Dear QGIS community,
> 
> I am attempting to get the coordinate intersects of my map corners to 
> display in Print Layout/Composer (i.e., N and W coordinates). The exact 
> directions were: 'For geo-referencing purposes labelled coordinate 
> intersects should be shown in all four corners of the map'. There does 
> not seem to be an option for this in QGIS (I have found a few in ARC). 
> I have found dynamic text in the Print Layout (Add Items - Add Dynamic 
> Text - Map Properties) and one can see X minimum, X maximum, Y etc. I 
> am not sure what these are or if they are relevant to me finding the 
> map corner coordinates.
> 
> I also found the plugin Map Corner coordinates. But this seems to only 
> work for the main map viewer, and I can't get this to align exactly 
> with my Print Layout to ensure these coordinates are exactly the same.
> If there was even a mathematically method, I would be more than partial 
> to using that even. I appreciate any and all help in these matters. 
> Thank you in advance.
> 
> Kind Regards,
> Alanna
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