Using Arrays

[Van Brollini]

I have spent 2 weeks trying to figure this out by reading these manuals.
That is why I gave up and went to arrays, figuring I could use my knowledge of C to help.
What you suggested so far works, but can't understand in what you send how to access individual elements in the array


----- Start Original Message -----
Sent: Fri, 3 Jun 2011 19:41:06 -0600
From: Mike Bonner <bonnmike at gmail.com>
To: How to use LiveCode <use-livecode at lists.runrev.com>
Subject: Re: Using Arrays

> Forgot to mention, once you adjust the array you can then set the datagrid
> to the new values by setting the dgdata of group "yourgrid" to tArray.
> 
> Depending on what you're doing, it may be more efficient to just update
> values directly in the datagrid.  Here are some base links to datagrid
> lessons that are pretty helpful, as well as the datagrid api info.
> 
> http://lessons.runrev.com/spaces/lessons/manuals/datagrid
> 
> http://lessons.runrev.com/spaces/lessons/manuals/datagrid_tips
> 
> 
> On Fri, Jun 3, 2011 at 7:36 PM, Mike Bonner <bonnmike at gmail.com> wrote:
> 
> > dgtext isn't an array value, to do what you want you need to get the dgdata
> >
> > For example, if you have a simple table grid with 2 columns, col1 and col2
> > with 3 records, to get the array back out do
> >
> > *get the dgdata of group "yourdatagridgroupname" *
> > *put it into tArray*
> >
> > At this point, knowing whats in the grid if you
> >
> > *put the keys of tArray*
> > since there are 3 records, the keys will be 1, 2 and 3 will be displayed in
> > the message box. If you then *put the keys of tArray[1]* you will see the
> > column keys, col1 and col2, so to get a specific cell is as you've been
> > trying to do with the dgtext  tarray[1]["col1"] will get the data from row 1
> > col 1.
> >
> > if you get the dgtext, it should react like a tab delimited flat file.  So
> > if you
> >
> > *get the dgtext of group "mydatagridgroup"*
> > *put it*
> >
> > it should display all rows and columns of the datagrid in the message box
> >
> > On Fri, Jun 3, 2011 at 7:09 PM, Van Brollini <analog_test at runbox.com>wrote:
> >
> >> I have a datagrid of 1250 by 28 that has been successfully uploaded during
> >> the creation of the datagrid.
> >>
> >> I can use this line
> >> put the dgText of group "DGTester" into tArray
> >> to move the datagrid into an array.  During debug process with breakpoint,
> >> this is successful.
> >>
> >> Now when I try to read, modify, compute results I get nothing.
> >>
> >> I have used get tArray[1][16] to query the array and get NULL.
> >> I have tried to put "3.79e-6" into tArray[1][16] and the whole array ends
> >> up NULL.
> >>
> >> What do I need to do to access individual elements of the array, modify
> >> them and put their answers back into the array.  In C this is a piece of
> >> cake, however, LiveCode is not releasing her secrets to me as yet.
> >>
> >> Thanks
> >>
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