Atlas Elyden

[Soixante]

Hi vorropohaiah. I'm a big fan of your world-building and cartography project. Since I have been for a long time been meaning to do an atlas of my own world, I wanted to ask how you get correct longitude and latitude graticules? I know Fractal Terrains can do this, but when you're using a pre-built world with existing coastlines? More specifically, how do you go about changing the projection from a worldview map to a regional map, and even if you decided not to do this; how would you go about re-centering the projection for each regional map, all while keeping the graticule consistent with the overall map? I want to do a traditional atlas type graticule, with the central line of longitude being more or less vertical. This has been giving me a lot of headaches as I just can't figure out how to do it.

[Raptori]

Hi vorropohaiah. I'm a big fan of your world-building and cartography project. Since I have been for a long time been meaning to do an atlas of my own world, I wanted to ask how you get correct longitude and latitude graticules? I know Fractal Terrains can do this, but when you're using a pre-built world with existing coastlines? More specifically, how do you go about changing the projection from a worldview map to a regional map, and even if you decided not to do this; how would you go about re-centering the projection for each regional map, all while keeping the graticule consistent with the overall map? I want to do a traditional atlas type graticule, with the central line of longitude being more or less vertical. This has been giving me a lot of headaches as I just can't figure out how to do it.

I don't know about vorro, but I use NASA's free G.Projector program to do this.

I created an equirectangular map of my world without any graticules on it, with continents in white and oceans in black. When I want a new projection I open G.Projector and select that map. I then fiddle with the options (different map projections, graticule settings, latitude and longitude of the center point, etc) then once I've got a projection that I like covering the correct area, I then export it as a jpg at the largest size possible. The exported jpg is used as a template from which I create the map.

I know some other people on here use the same program (I think - Max - does, for example), though their techniques might vary a bit

[vorropohaiah]

Hi vorropohaiah. I'm a big fan of your world-building and cartography project. Since I have been for a long time been meaning to do an atlas of my own world, I wanted to ask how you get correct longitude and latitude graticules? I know Fractal Terrains can do this, but when you're using a pre-built world with existing coastlines? More specifically, how do you go about changing the projection from a worldview map to a regional map, and even if you decided not to do this; how would you go about re-centering the projection for each regional map, all while keeping the graticule consistent with the overall map? I want to do a traditional atlas type graticule, with the central line of longitude being more or less vertical. This has been giving me a lot of headaches as I just can't figure out how to do it.

Pretty much what Raptori and -Max- said

in more detail - i have an equirectangular worldmap (black land white sea) which i import into g. Projector. Generall i use an equidistant conic map, thugh the projection depends on the latitude. i then export a map without graticules, keeping a note of the settings. I then use a blank map and export another one with graticules. I then use those exported g.projector maps as templates, tracing the coastlines in more detail on one an the graticules on the other.

Obviously if youre making an atlas, keep in mind regions youve already mapped when youre mapping adjacent regions - dont retrace the coastlines if theyve already been done, otherwise youll end up with conflicting areas!