[mapserver-users] rotate and fit based on polygon

[Lime, Steve D (MNIT)]

Looks like you need to use the polygon extent to compute the rotation angle but then should use the extent of the rotated polygon for the map extent.


________________________________
From: Travis Kirstine <traviskirstine at gmail.com>
Sent: Friday, September 8, 2017 9:23 PM
To: Carlos Ruiz; Lime, Steve D (MNIT)
Cc: mapserver-users at lists.osgeo.org
Subject: Re: [mapserver-users] rotate and fit based on polygon

Thanks Carlos, we've employed the method you've suggested already but not getting the results we are looking for, perhaps the linked image will help illustrate my problem

https://drive.google.com/file/d/0BwWJtNuZjvCUR1AtVEZVLTdCbk0/view?usp=sharing
[https://lh6.googleusercontent.com/MLd9NjXDV9xuCgkbcx5555cQIqdUGvnuzkGeZhP51pN3RsEHd2FO5g=w1200-h630-p]<https://drive.google.com/file/d/0BwWJtNuZjvCUR1AtVEZVLTdCbk0/view?usp=sharing>

rotate_image.jpg<https://drive.google.com/file/d/0BwWJtNuZjvCUR1AtVEZVLTdCbk0/view?usp=sharing>
drive.google.com






On 8 September 2017 at 16:25, Carlos Ruiz <boolean10001 at yahoo.com<mailto:boolean10001 at yahoo.com>> wrote:
Travis,

Do you have the polygons in PostGIS ? Maybe you can get the extent by using st_extent(geom) and retrieve it on PHP/Python to set the map extent. You could also get a margin by multiplying extent b 1.1 (10%).



On Thursday, September 7, 2017, 1:27:06 PM CDT, Travis Kirstine <traviskirstine at gmail.com<mailto:traviskirstine at gmail.com>> wrote:


I have a bunch of polygons that represent 8.5 x 11 printed map sheets.  I'd like to produce images for each sheet that best fits the polygon within the outputted image.  We've tried using mapscript by setting the map extent based on the bbox of the source polygon and rotation but results aren't great depending on the orientation of the source polygon.  Is there a way to set the "extent" based on a polygon?
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