<div dir="ltr">Hello,<div><br></div><div>I am trying to setup a custom projection for Mars using the WKT:<br><br><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)">PROJCS["Mars_Equidistant_Cylindrical", GEOGCS["Mars 2000", DATUM["D_Mars_2000", SPHEROID["Mars_2000_IAU_IAG",3396190.0,169.89444722361179]], PRIMEM["Greenwich",0], UNIT["Decimal_Degree",0.0174532925199433]], PROJECTION["Equidistant_Cylindrical"], PARAMETER["False_Easting",0], PARAMETER["False_Northing",0], PARAMETER["Central_Meridian",0], PARAMETER["Standard_Parallel_1",0], UNIT["Meter",1]]</span><br></div><div><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)"><br></span></div><div><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)">This is all fine and it validates ok.</span></div><div><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)"><br></span></div><div><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)">What I need is to be able to use the Mars projection and be able to overlay Longitude Latitude grid lines in layout, but I get no valid transform for the default WGS84 etc. Anyone sorted out how this works?<br><br>Thanks</span></div><div><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)"><br></span></div><div><span style="color:rgb(82,89,96);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Liberation Sans",sans-serif;font-size:15px;background-color:rgb(249,248,246)">Lester</span></div></div>