reading mdf file and plotting data fails

Hi all

I have some mdf files, created by Vector Canoe, and want to read and plot them in Matlab2016b

First file T036 is a mdf3.0, second file T037 is a mdf4.1 (attached)

I try to read the first file like this

a = mdf('T036.mdf')

I get an error

Error in asam.MDF/delete

Error in asam.MDF

Error in mdf (line 25)

out = asam.MDF(file);

> In asam.MDF

In mdf (line 25)

MDF file invalid format.

Reading the second file like this

b = mdf('T037.mdf')

will return no error, the mdf file I just read has 855 channels.

So I want to read a certain channel like this

c = read(b,1,b.ChannelNames{1})

and then plot the channel by

plot (c.Time, c.posX)

This works fine, but only for ~500 of the channels.

c = read(b,507,b.ChannelNames{507})

will work fine, but

c = read(b,508,b.ChannelNames{508})

returns error code

Unable to read from MDF file.

Soooo....

is there something wrong I am doing this?

Or is there an error in the mdf file?

Also, why I can't read the 3.0 file?

Thanks in advance

Answer 1

[Bjoern Hackert]

I loaded the files for fun in NI Labview, no problems there, so I guess the files are alright.

[derecho]

hey did you solve the problem? i have the same problem here