[mapserver-dev] problems about charts and labels

[Brent Fraser]

Perhaps

   LABELCACHE OFF

in the LAYER definition would help with the labels?

Best Regards,
Brent Fraser


On 4/26/2011 11:45 AM, Annabell Schelton Lima wrote:
> Hi, I still have some problems with my labels, i managed my labels over the map but
>   even when i not define minfeature size in my label object, some labels are not displayed, when i change the scale are appearing. It´s the same problem with my charts, i have some thematic layer, i using pie and bar charts, but they show it randomly, in this case not depend of scale.. somebody help me please!!
>
>
>
> ----- Mensaje original -----
> De: "thomas bonfort"<thomas.bonfort at gmail.com>
> Para: "Mohamed Saâd HESSANE"<saad.hessane at gmail.com>
> CC: mapserver-dev at lists.osgeo.org
> Enviados: Jueves, 21 de Abril 2011 19:33:09 GMT +01:00 Amsterdam / Berlín / Berna / Roma / Estocolmo / Viena
> Asunto: Re: [mapserver-dev] Precision about geotransform
>
> Mohamed,
> I'm guessing that as the underlying data drivers only accept
> rectangular extents oriented northwards, they have to return more data
> if there is a rotation implied. And mapserver also has to filter the
> extra features out at some point, even if they do not fall on the
> final map image. This could explain the overhead.
>
> --
> thomas
>
> 2011/4/21 Mohamed Saâd HESSANE<saad.hessane at gmail.com>:
>> I don't think so. If it was, juste when a cos or a sin vanish.
>> My first thought was that mapserver have to calculate more pixels in a
>> rotated map than a normale map. But when i read the source code i found that
>> it's the projection which rotate, not the map. So why this discimination?
>> The same projection
>>
>>
>> 2011/4/21 Stephen Woodbridge<woodbri at swoodbridge.com>
>>> On 4/21/2011 10:32 AM, Mohamed Saād HESSANE wrote:
>>>> Hy list,
>>>> I have a question. I'm doing a benchmarking test of a rotated map, and i
>>>> get the result in the attached file.
>>>> My question is why it take more time to draw a map rotated at 45° than a
>>>> map rotated at 90° or 183° ???
>>>> Thank you !
>>> I'm only guessing here but could it be that the math required to compute
>>> cos and sin is more costly in cpu cycles at those angles.
>>>
>>> Regardless, this is an interesting question and I love the graphic, nice
>>> job on that.
>>>
>>> -Steve W
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>>
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