Kia ora Alastair I have not looked at the specifics that you provided, but off the top of my head… When I was new to Therion, over a decade ago, I expected ‘grid-coords border’ to put coordinates on the outermost visible grid intersections around the perimeter of an exported pdf. After some inquiry and experimentation I came up with this understanding – it is not typically practicable to achieve this, but with some compromise it is sometimes possible. Therion generates a grid around the cave passage exported, in your example below, at 250 m intervals in each cardinal direction. Since the ‘bordering’ grid line will be 250 m (at scale) outside of any cave passage it is unlikely it will make it onto the exported pdf, since the displayed map extent around the outside of the cave is only a few tens of millimetres. I have only ever achieved it by having a small grid spacing, and a suitably large ‘overlap’ (assuming you are exporting maps rather than atlas’) specified. Try specifying grid at 10 m and overlap at say 30 cm to verify this concept. It gets even more frustrating if the output is rotated (say using ‘rotate 70’), since your exported pdf will have bordering coordinates only where the edge of the grid is visible. If someone has a solution or can come up with a means of labelling specific grid intersections, I would be appreciative! Ngā mihi nui Bruce From: Therion <therion-bounces@speleo.sk> On Behalf Of A Gott Sent: Saturday, 13 April 2024 22:40 To: List for Therion users <therion@speleo.sk> Subject: [Therion] Geographical Coordinates on grid HI Therion users, I am really struggling to get coordinates to show on the edges of the Plan pdf when generated. There has to be something I'm missing! Does anyone have any examples where they have implemented coordinates on the border of the PDF so I can take a look? The two models I have tried this on are the Peak speedwell model in Castleton, Derbyshire, UK and also the Agua/Naciemiento Model in Tresviso, Cantabria/Asturias, Spain I really would like to see it on the Peak speedwell model and now realise we tried it on the Agua model but decided against it due to deadlines. We set a deadline for this one, but including the coordinates are a must! Peak speedwell - cave-registry.org.uk/svn/PeakDistrict/Castleton/castleton_model_thconfig <https://www.cave-registry.org.uk/svn/PeakDistrict/Castleton/castleton_model_thconfig> The things I've tried to include in the above which I hoped would help the coordinates to generate, at one point I did get the coordinates to generate only on the west side of the pdf, but now it's failing to show anywhere: page-setup 118.9 84.1 114.9 80.1 1.5 1.5 cm overlap 3 cm #size 110 75 cm size 105 75 cm grid bottom grid-coords border grid-size 250 250 250 m cs OSGB:SK grid-origin 14865.01 82575.16 193.75 m I also tried implementing the full grid, in the hope that this would help, but also didn't. layout custom_grid ##change default cross hair grid to grid code metapost def s_hgrid (expr xpos, ypos, xsize, ysize) = pickup PenD; if ( xpos >= -xsize ) and ( ypos >= -ysize ): draw ( -xsize/2, 0) -- ( xsize/2, 0); draw ( 0, -ysize/2) -- ( 0, ysize/2); fi enddef; endcode endlayout For Ref, the Tresviso model, but we wiped any reference to including a grid on this one. cave-registry.org.uk/svn/Andara/Tresviso/Nacimiento/therion/Nacimiento2020/Nacimiento2020_master.thconfig <https://cave-registry.org.uk/svn/Andara/Tresviso/Nacimiento/therion/Nacimiento2020/Nacimiento2020_master.thconfig> Regards, Alastair Gott.