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Posted to user@poi.apache.org by Tahir Akhtar <ta...@spectrum-tech.com> on 2006/06/22 17:46:08 UTC
Can't get the percent PTG right
Daniel,
Sorry for bugging you again. I am trying to use your patch
[http://issues.apache.org/bugzilla/show_bug.cgi?id=39136] with poi-3.0.
I still get A3*10 for formula entered as A3*10% . Percent never appears in
excel.
I am using src as of 2006-06-15 . Am I missing anything? Do I need another
patch to go with it.
Regards,
Tahir
-----Original Message-----
From: Tahir Akhtar [mailto:tahir@spectrum-tech.com]
Sent: Tuesday, June 20, 2006 4:16 PM
To: 'POI Users List'
Subject: RE: Turn off warning in POI
Well, I found your patch at
http://issues.apache.org/bugzilla/attachment.cgi?id=17998
Do you recommend using this patch with POI 2.5?
-----Original Message-----
From: Tahir Akhtar [mailto:tahir@spectrum-tech.com]
Sent: Tuesday, June 20, 2006 4:12 PM
To: 'POI Users List'
Subject: RE: Turn off warning in POI
Daniel,
I am using POI 2.5 release and I am generating workbooks based on user
input. If my user provide a formula with % such as A3*10% it appears in
excel as A3*10. The percent symbol is chopped off.
Can I instruct POI to simply write the formula into the cell without trying
to parse it? If no, how can I fix this?
Regards,
Tahir
-----Original Message-----
From: Daniel Noll [mailto:daniel@nuix.com.au]
Sent: Thursday, June 15, 2006 4:13 AM
To: POI Users List
Subject: Re: Turn off warning in POI
Chaudhary, Harsh wrote:
> Like you pointed out, I care for just the results of a formula and not
> the formaula itself.
>
> But just out of curiosity, how do you go about fixing and debugging
> something like this. I don't think the debugger is a good place as the
> sheet representation is usually very large.
> Also, if the cells which contain the formula are not recognized or
> handeled by POI, what can I do in :
> 1. POI 2. The excel sheet
> to take care of this?
> Its not something I need to know urgently, but I am very interested to
> know.
To take one example, we found that % signs in formulas weren't handled
by POI, and were causing a large number of warnings (formulas such as
A3*10% are remarkably common when spreadsheets are being used for
taxation or interest calculations.)
So we had to implement a PercentPtg class, which turned out to be fairly
simple. Code also had to be added to Ptg.java to create the PercentPtg
object when the ID matched PercentPtg.sid.
Cell reference code may be harder (or more interesting) than percent
formulas, but existing classes like Ref3DPtg can probably go a long way
toward figuring out what code is needed. The hardest part is figuring
out how "big" the Ptg is (PercentPtg was 1, Ref3DPtg is 7, etc), for
which you would need to refer to whatever format documentation you can
dig up.
Daniel
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