Hi all,

in this patch I generate 150 random numbers. I want them to be written as a row in a .csv file. So, pressing play and then [write( this actually happens: the newly created .csv file contains a row of 150 numbers (I opened it with LibreOffice Calc).
The problem is now: if I generate another 150 numbers, I would like them to be written to the same file as the second row, another 150 numbers as the third row and so on even hundreds of times.
Any idea how I can do it?

Thank you,
a.

write_csv.pd

@atux Check out the help for [textfile], [add( and [add2( will generally remove the need for [list] objects in the middle. If you need to get the output of a list into [textfile] than dripping the list and using the [add( message will do it.

[100(
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[random 100]
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[add $1(
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[textfile]

@oid said:

@atux Check out the help for [textfile], [add( and [add2( will generally remove the need for [list] objects in the middle. If you need to get the output of a list into [textfile] than dripping the list and using the [add( message will do it.

Hi,

but with [add $1( it write numbers vertically in a column, instead the patch above is the way I found to write data horizontally in a row, as I would like. Now I'm trying to figure out if there is any automatic way to add a number of rows at will (even several hundred).
Yes, I will study the [textfile] help better.

P.S.:
Ok, even if I wanted to write the output in columns, generating 150 random numbers 5 times, to write 5 columns I use:

[pack f f f f f]
|
[add $1 $2 $3 $4 $5(
|
[textfile]

and it works, but generating 150 random numbers 500 times with as many columns to write, this way becomes impractical...

Bye,
a.

@atux said:

but generating 150 random numbers 500 times with as many columns to write, this way becomes impractical...

Just replace the [list prepend set] with [list prepend add] and now you construct the list first, each time you hit that bang is would add another line of 100 or however many you bang into the [until]. Put another [100( -> [until] too bang the first 100 and you would get 100 rows of 100 columns.

@oid said:

Just replace the [list prepend set] with [list prepend add] and now you construct the list first, each time you hit that bang is would add another line of 100 or however many you bang into the [until].

Hi,

I had already tried using [prepend add], it didn't work. But it works instead, the problem was in the earlier part of the patch where I fixed some errors.
Now it work fine (in Purr-Data).

So, in this patch every hit of the play-bang generates a list of 150 random numbers.
All generated lists are stored.
When [write( is pressed, these lists are written as rows one after the other in a .csv file.

Thanks, bye

a.

write_csv_2.pd