Possible need for integer forced math?  I am not familar enough with GD 
to know if this would help, but when doing a similar thing with 
web-based on the fly generation of graphs simply supplying a length of 
460.3 on an image's attributes for instance sent the browser into a tizzy.



Konrad Foerstner wrote:
> Heyho!
> 
> My case: 
> 
> I'm writing a program which analyses some input to 
> get some percent values. These values should be drawn
> in a diagramm (is use GD for that). To use the area
> of the created picture optimally I want the biggest value
> (see my question of yesterday...it is solved now) 
> to have column with the maximum lenght (in my case 580 pixels).
> All the other values should be drawn in relation to that. 
> I thougt I can make a factor and then multiply all the
> other values with this on to get this result. My code looks like
> this:
> 
> my $factor = (580/$max_percent_value)
> 
> my $column_lengt_a = $percent_value_a * $factor;
> my $column_lengt_b = $percent_value_b * $factor;
> my $column_lengt_c = $percent_value_c * $factor;
> .....
> 
> My Prob:
> I does not work every time. On some data input the columns are bigger than 580 pixel.
> 
> I also try, calculate without storing the factor in a string
> (avoid mistakes by rounding...I don't know) like this:
> 
> my $maximum_pixel = 580;
> my $column_lengt_a = $percent_value_a * $maximum_pixel;
> 
> 
> What to do?
> 
> 
> cu
> 
> Konrad
> 



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