GetLocationElevation

import os
import globalmapper as gm

import_dir = "Z:/GM-20069/single_function_sample_data/"
# Close all layers that may be open
layers_are_open = gm.GetLoadedLayerList()
if layers_are_open:
    arr_ptr, arr_size = layers_are_open
    initial_layers = gm.GM_LayerHandle_array_frompointer(arr_ptr)
    for i in range(arr_size):
        gm.CloseLayer(initial_layers[i])

err_LoadLayerList, array_pointer, array_size_param = gm.LoadLayerList(
    os.path.join(import_dir, "Depth_to_Water.tif"),
    gm.GM_LoadFlags_HideAllPrompts,
)

# Get handle for the loaded layers
arr_ptr, arr_size = gm.GetLoadedLayerList()
layers_array = gm.GM_LayerHandle_array_frompointer(arr_ptr)
layers_list = gm.carray_to_list(layers_array, arr_size)

### START SAMPLE
err_GetLocationElevation, elevation = gm.GetLocationElevation(
    gm.NULL, 1116798, 220547
)

### END SAMPLE

assert (
    gm.GM_Error_None == err_LoadLayerList
), f"LoadLayerList: Expected {gm.GM_Error_None}, got {err_LoadLayerList}"
assert (
    gm.GM_Error_None == err_GetLocationElevation
), f"GetLocationElevation: Expected {gm.GM_Error_None}, got {err_GetLocationElevation}"

assert os.path.isdir(import_dir), f"Import directory doesn't exist: {import_dir}"

assert os.path.exists(
    os.path.join(import_dir, "Depth_to_Water.tif")
), "Sample data doesn't exist"

# These are the values they had when the sample was created
assert elevation == 76.0, "Elevation value is incorrect"