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more than 2 decimals for AXIS_FORMAT_CURRENCY
http://wiki.pchart.net/forum/viewtopic.php?f=1&t=2533		 Page 1 of 1
Author:  neofutur [ Fri Mar 23, 2012 1:09 am ]
Post subject:  more than 2 decimals for AXIS_FORMAT_CURRENCY
hi all,

I m making a chart website for namecoin historical values, and for this I needed to print y axis values , with type AXIS_FORMAT_CURRENCY , with 4 decimals.

I explored all the options of the drawscale function, and couldnt find anyway to show more than 2 decimals.

After hours searching for the good parameter, I had a look at the pDraw.class.php function, and the number of decimals for AXIS_FORMAT_CURRENCY seem to be hardcoded to 2 .

I had to change line 3142 of pDraw.class.php
from
Code:
      { return($Format.number_format($Value,2)); }

to
Code:
      { return($Format.number_format($Value,4)); }


and immediately had the result I needed :

Image

with 4 decimals on the currency axis

so . . .I could obtain what I need, but i m surprised there is no other way to make it, shouldn t there be some parameter to set the number of decimals to show for a currency axis ? hardcoding my number of decimals in line 3142 of pDraw.class.php is not a long term solution . . .

PS before people say "no one need 4 decimals for currencies" : http://www.fxstreet.com/rates-charts/forex-rates/
Author:  chenopod [ Tue May 14, 2013 10:37 pm ]
Post subject:  Re: more than 2 decimals for AXIS_FORMAT_CURRENCY
Nice Work neofutur!!!

You saved me a lot of time. Thanks!

To add to your solution, it looks like one can create a new format pretty easily.

I added a line to pData.class.php
Code:
define("AXIS_FORMAT_CURRENCY_NODECIMAL"      , 680007);

note: make sure your value is not already in use (680007)

and then duplicated the code around line 3142 in pDraw.class.php and modified it:
Code:
     if ( $Mode == AXIS_FORMAT_CURRENCY_NODECIMAL )
      { return($Format.number_format($Value,0)); }


Seems to work great.
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