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SaveProjectionToFile

Updated
globalmapper.SaveProjectionToFile(string aFilename, GM_Projection_t aProj, uint32 aReserved=0) → GM_Error_t32

Saves a GM_Projection_t structure to a projection (PRJ) file.

Parameters:

  • aFilename (str) – filename of projection file to save to

  • aProj (GM_Projection_t) – projection to save

  • aReserved (uint32) – Reserved for future use; defaults to 0

Returns:

Error Code

Return type:

GM_Error_t32

Example

The following is an example of SaveProjectionToFile.

import os
import globalmapper as gm

export_dir = os.path.join(os.path.dirname(os.path.dirname(__file__)), "../../misc/save_proj_file_output/")
os.makedirs(export_dir, exist_ok=True)

### START SAMPLE
err_SaveProjectionToFile = gm.SaveProjectionToFile(
    export_dir + "saved_proj.prj", gm.GM_Projection_t(), 0
)

### END SAMPLE

assert (
    gm.GM_Error_None == err_SaveProjectionToFile
), f"SaveProjectionToFile: Expected {gm.GM_Error_None}, got {err_SaveProjectionToFile}"

assert os.path.isdir(export_dir), f"Error creating the export directory: {export_dir}"

# Expected path for file export
exported_filepath = os.path.join(export_dir, "saved_proj.prj")
# Assert that the final expected output file exists and is not empty
assert os.path.exists(
    exported_filepath
), f"Expected output file does not exist: {exported_filepath}"
assert (
    os.path.getsize(exported_filepath) > 0
), f"Exported file is empty: {exported_filepath}"

For more context refer to the tutorial page on setting projections.