channel will be too long if this number of values are inserted

[kaan]

hi,

i am trying to insert "NOVALUES" to a channel. And about 13000 values as a block. but i receive an error message saying : "channel will be too long if this number of values are inserted" . Has the number of values that can be insterted at once  a limit? how could i solve this problem?

thanks in advance

[Brad_Turpin]

Hi kaan,

This depends strongly on your DIAdem version.  Over the last 3 or 4 years this sort of action has gotten steadily easier with each new version.  What DIAdem version are you using?  Is the channel into which you want to insert values a channel that was loaded directly from a data file or one that was created by DIAdem (say, through an ANALYSIS routine)?  How are you trying to insert the NoValues-- are you using the DataBlInsertVal() function?  Did you try to reset the length of the channel first?  If so, how-- with ChnLength() or ChnReAlloc()?

Brad Turpin
DIAdem Product Support Engineer
National Instruments

[kaan]

Hi Brad,

I am using DIAdem 10.0 , i am also using DIAdem 10.1 beta3 but my script should function with DIAdem 10.0

The channel i want to insert values is a copy of a channel from original data loaded: First i load the data to dataportal and create a new channel group then copy some of the channels into new channel group to work on them / modify them. Then i insert the values to these channels (new channel group)

yes, I am using DATABLINSERTVAL() function

normally i didnt need to set a new channel length , because when u insert values, the length of the channel automatically increases and is actualised.

For some channels i dont have any problems inserting values, because i dont insert more than 100 values at once but there are some channels that i have to insert more than 10 000 values at once which results in above mentioned error message

i tried to set the channel length to the desired value (which is known already) but because of the fact that when values are inserted , the channel length increases automatically, it results in a longer channel with "0" values at the last rows which is not desirable for my application

i am sending you the script so that you can have a quick look on it. the script aims to re-create the points in X and Y channels which were lost during lossy compression (deleting the values which are on a line) i have to recreate those points in order to acquire a equi-distant X axis (hence a vaweform channel) in order to be able to apply some evaluations on those channels

thanks in advance

Kaan

[stefan.henke]

Hi Kaan,

I played a bit with your VBS, please excuse (;-)

What I found out is, that max number of values you can insert into a channel with DataBlInsertVal(), is the current ChannelLenght itself.

So if you want to insert a block of NoValues, larger than the existing channel, you have to split it into several  DataBlInsertVal() functions.

To explain it, I did attach my messy example.

Hope I was able to help,

Stefan Henke

NIG

[Brad_Turpin]

Hi kaan,

Based on your stated objective-- to take a channel with lossy compression and reinstate all the X values that were suppressed, I'm going to recommend that you change course entirely and use the DIAdem ANALYSIS function "Linear Mapping", available programmatically as: ChnMapLinCalc().  You can use this function on the existing imported data channel, and it will automatically create a new channel (of correct length) with constant deltaX in the default Group.

If I understand your goal correctly, this will be MUCH easier and faster than trying to insert values and do the linear interpolation yourself.

Brad Turpin
DIAdem Product Support Engineer
National Instruments

[kaan]

hi stefan and brad

thanks for the answers

has been very helpful

Kaan

[stefan.henke]

Hi Kaan,

the difficulties are admittedly not very comfortable.

National Instruments to be about to release the new Version of DIAdem -> DIAdem 10.1.

In this Version you will be able to insert Blocks of Data larger than the length of the Channel itself.

Regards,

Stefan Henke

NIG