Error when trying to load JEOL's .map file

[PereraUmesha]

Describe the bug

I am trying to load a .map file from JEOL's EPMA (Electron Probe Micro Analyzer). Then I get the below error.

WARNING:hyperspy.io_plugins.jeol:Not a valid JEOL img format ERROR:hyperspy.io:If this file format is supported, please report this error to the HyperSpy developers.

UnboundLocalError Traceback (most recent call last) Input In [4], in <cell line: 1>() ----> 1 mdata = hs.load(map_fname)

File ~\anaconda3\envs\new202302\lib\site-packages\hyperspy\io.py:466, in load(filenames, signal_type, stack, stack_axis, new_axis_name, lazy, convert_units, escape_square_brackets, stack_metadata, load_original_metadata, show_progressbar, kwds) 463 objects.append(signal) 464 else: 465 # No stack, so simply we load all signals in all files separately --> 466 objects = [load_single_file(filename, lazy=lazy, kwds) 467 for filename in filenames] 469 if len(objects) == 1: 470 objects = objects[0]

File ~\anaconda3\envs\new202302\lib\site-packages\hyperspy\io.py:466, in (.0) 463 objects.append(signal) 464 else: 465 # No stack, so simply we load all signals in all files separately --> 466 objects = [load_single_file(filename, lazy=lazy, **kwds) 467 for filename in filenames] 469 if len(objects) == 1: 470 objects = objects[0]

File ~\anaconda3\envs\new202302\lib\site-packages\hyperspy\io.py:525, in load_single_file(filename, kwds) 518 raise ValueError( 519 "reader should be one of None, str, " 520 "or a custom file reader object" 521 ) 523 try: 524 # Try and load the file --> 525 return load_with_reader(filename=filename, reader=reader, kwds) 527 except BaseException: 528 _logger.error( 529 "If this file format is supported, please " 530 "report this error to the HyperSpy developers." 531 )

File ~\anaconda3\envs\new202302\lib\site-packages\hyperspy\io.py:545, in load_with_reader(filename, reader, signal_type, convert_units, load_original_metadata, kwds) 543 """Load a supported file with a given reader.""" 544 lazy = kwds.get('lazy', False) --> 545 file_data_list = reader.file_reader(filename, kwds) 546 signal_list = [] 548 for signal_dict in file_data_list:

File ~\anaconda3\envs\new202302\lib\site-packages\hyperspy\io_plugins\jeol.py:109, in file_reader(filename, kwds) 107 fd.close() 108 else: --> 109 d = extension_to_reader_mapping[file_ext](filename, kwds) 110 if isinstance(d, list): 111 dictionary.extend(d)

File ~\anaconda3\envs\new202302\lib\site-packages\hyperspy\io_plugins\jeol.py:194, in _read_img(filename, scale, **kwargs) 190 _logger.warning("Not a valid JEOL img format") 192 fd.close() --> 194 return dictionary

UnboundLocalError: local variable 'dictionary' referenced before assignment

To Reproduce

Steps to reproduce the behavior:

import hyperspy.api as hs
from pathlib import Path

map_fname = Path("data/inputdata/data001.map")
mdata = hs.load(map_fname)

Expected behavior

Load the contents of .map file

Python environement:

• HyperSpy version: 1.7.3
• Python version: 3.9.16

Additional context

[ericpre]

It seems that this file is not supported, can you please share a file that we can use to reproduce and test?

[PereraUmesha]

Thank you for the response. Please find the file (Test.map) inside the following .zip file

Test.zip

[nem1234]

Is the size of image fixed with 256x256 pixels? Is there another file that was saved with *.img file?

[nem1234]

This test file contains 32 bytes header: 00000000 01 00 00 00 00 00 00 00 00 00 00 00 08 00 00 00 |................| 00000010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................|

And also 256x256 pixels double precision float values (8bytes / pixel). 00000020 00 00 00 00 00 cc b1 40 00 00 00 00 00 c0 b1 40 |.......@.......@| ....

[nem1234]

We need more sample data to resolve this issue. Do you have some related metadata files with this map?

[ericpre]

@PereraUmesha, would you be able to provide the information asked by @nem1234? Thanks!