Unable to read a SXM file from Nanonis about pyspm HOT 11 CLOSED

Hmm, okay.

This looks like something with the parser itself then. If you send me the SXM file, i can take a look ([email protected]).

Also what is the Nanonis HW you are using?

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Hmm, okay.

This looks like something with the parser itself then. If you send me the SXM file, i can take a look ([email protected]).

Also what is the Nanonis HW you are using?

Did u get my email ?

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Thanks a lot, it is working!!! Wow I really appreciate your time you spend for solving this issue!!

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Hi, I double checked the SXM loader with Nanonis measurements and it works correctly. Try pointing it directly to your measurement data:

from pathlib import Path
import pySPM

p = Path("C:\\Users\\rbrue\\Nextcloud\\Data Lab 013\\Sample 09_22\\09_2022\\FeTa110_20220923_CrTip_9935R_4.2K_2.4T_011.sxm")
afm = pySPM.SXM(p)
afm.list_channels()

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Hey,

first of all thanks a lot for this quick response!!
Unfortunately it is giving me exactly the same error meassage like before.

afm = pySPM.SXM(p)
Traceback (most recent call last):

Cell In[27], line 1
afm = pySPM.SXM(p)

File ~\AppData\Roaming\Python\Python311\site-packages\pySPM\SXM.py:36 in init
self.header[key].append(l.decode('ascii').split())

UnicodeDecodeError: 'ascii' codec can't decode byte 0xb0 in position 11: ordinal not in range(128)

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Okay, so I took a look at the header of the file you sent. This is not a file that is output by Nanonis, it looks to be a Gwyddion SXM, which is not supported by pySPM. See the comparison below with a file output by Nanonis.

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Try the file directly output from Nanonis, and see if that works.

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Ah sorry maybe I sended you not an untouched file...I will send you the raw file again but I checked already a raw file and same Error message.
So in a few you will receive again an Email with raw .sxm file.

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Okay, so the structure of this file is correct. The reason for this error is the unicode characters in the file (the parser assumes ascii). This is fixed in the latest version of pySPM 0.3.3.

Thanks for reporting it.

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So you mean it is fixed because you fixed it now or am I using an old version of pySPM?

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Update to the latest version of pySPM

pip install -U pySPM

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