layoutsmappingqgisraster
I have created a map in the print layout in QGIS.
Once the coordinate grids are added to the map, they overlay the current map that I actually want to show.
For me, grids are just secondary information but right now they cut through the real informative map.
I would like to position them behind the map, so they only show in the white space outside the map e.g.
How can I change the position of the map to superposition, and the grid lines to supposition?
Consider setting up your layout template - and project templates - to use layout or project level variables. Refer to Nyall Dawson's videos here on Twitter and here on Youtube (this is an hour-long recorded live session)
Refer also to this series of old blog posts (part 1, part 2, part 3) relating to QGIS 2.12 that nevertheless illustrate how you might use variables to have a single point of reference.
EPSG:5652 is not the best CRS to choose.
It has a False Easting of 32500000 (UTM is normally 500000), and has the co-ordinates reversed. That's why when you overlay the OpenTopoMap tiles, your tile is not located where it should be.
It's also likely to be why the lat/lon grid lines don't appear - they will probably have diverged too much by the time they get to your tile. You can imagine where they would appear based on the location of the north pole in your OpenTopoMap image.
You could adjust your world file (.tfw) by adding 32000000 to the X coordinate. However, it's much easier to just set your Project/Layer CRS to WGS84 UTM (EPSG:32632)!
Once you do that, you should be able to follow the steps above to get your two grids.
Best Answer
Interesting question. I have been thinking about this for the last few hours and have been playing with a workaround- here is the basics of a rough example. The concept involves using two map items in the layout. Add the first map item to the layout, and adjust the scale and extent to your liking. Create a grid for this map item and adjust the spacing, frame, draw coordinates and any other grid properties you want. Next, turn off layer/s in the main map canvas, refresh the layout and lock layers and styles for this first map. Now go back to the main canvas and turn your layer/s back on. Now head back to the layout and add a new map item on top of the first. Turn off the background on Map item 2 so essentially you have a vector layer with a transparent background sitting on top of the grid for map item 1. The only thing is you need to set the scale and extents for map item 2 so that they match map 1 exactly. I admit is it a bit fiddly to adjust frames, scales extents etc. but with some playing around you should be able to get a reasonable result. I put together the layout below fairly quickly just to show the idea:
I also recorded the short screencast below. Just for demonstration, I have unlocked layers on the first map and refreshed the layout. Here, I am turning map 2 on and off so you can see the map with transparent background sitting on top of the grid and the 2 vectors lining up.