How to add new projection? #371
Description
Hello everyone,
I am in the process of translating the "General Oblique Transformation"* from PROJ to proj4js and already finished a first version. Currently I am struggling with the integration and testing part. It seems that the projection is not loaded. After running "npm run test" my tests fail and manually running a simple projections result in the following output:
C:\Git\proj4js-testbed> node --trace-uncaught app.js
C:\Git\proj4js-testbed\node_modules\proj4\dist\proj4-src.js:1433
throw error;
^
+proj=ob_tran +o_proj=moll +o_lon_p=40 +o_lat_p=50 +lon_0=60
Thrown at:
at Projection.callback (C:\Git\proj4js-testbed\node_modules\proj4\dist\proj4-src.js:1433:11)
at Projection (C:\Git\proj4js-testbed\node_modules\proj4\dist\proj4-src.js:1443:9)
at Projection (C:\Git\proj4js-testbed\node_modules\proj4\dist\proj4-src.js:1429:16)
at checkProj (C:\Git\proj4js-testbed\node_modules\proj4\dist\proj4-src.js:1993:14)
at proj4$1 (C:\Git\proj4js-testbed\node_modules\proj4\dist\proj4-src.js:1997:18)
at C:\Git\proj4js-testbed\app.js:5:14
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Module._load (internal/modules/cjs/loader.js:769:14)
For me this seems like the projection file is not found, but maybe I am wrong.
Steps:
- Included projection file to projections folder (obtran.js)
- Added projection to "includedProjections.js"
- Define test cases
- Ensure tests succeed
- Manually verify results: https://mygeodata.cloud/cs2cs/
I forked the whole library, see here for the complete code: https://github.com/StephanBehm/proj4js
Regards