Change one signals value in existing file then store to a new file

[danielzmod]

Hi!
Im trying to change the value of a signal (for example multiply a signal by 10). Then store it as a new file but with all metadata and conversion preserved.

I started with approach below and manage to get the signal correct. But then i lost all metadata and conversion of signals. It looks like the signal objects doesn't contain all metadata.

from asammdf import MDF, Signal
file = "test.mdf"
mdf = MDF(file)
mdf2 = MDF(version=mdf.version)

for sig in mdf.iter_channels():
    if "Speed" in sig.name:
        sig.samples = sig.samples*10
    mdf2.append(sig, )
mdf2.save('new.mdf')

I searched around and found this solution for renaming signals.

from asammdf import MDF, Signal
file = "test.mdf"
mdf = MDF(file)

# Change names
for group in mdf.groups:
    for channel in group.channels:
        channel.name = rename_function(channel.name) # Rename signal

mdf.save('renamed.mdf')

But i cant access and change the raw samples for each channel thru here.

Do anyone else have a nice solution for this?

Best regards
Daniel

[danielhrisca]

from asammdf import MDF, Signal
file = "test.mdf"
mdf = MDF(file)
mdf2 = MDF(version=mdf.version)

for sig in mdf.iter_channels(raw=True):
    if "Speed" in sig.name:
        sig.samples = sig.samples*10
    mdf2.append(sig, )
mdf2.save('new.mdf')

[danielzmod]

Thank you very much for the fast answer!