phpmapscript imagemap attributes
Doug Williams
williams at WEBSAWYER.COM
Wed Jul 4 10:31:51 EDT 2007
Assefa,
Again, no worries. I'm serious that taking the time to try to explain to you what I was finding did
help me to understand what was going on. I do not understand how you were trying to reproduce
what I was doing. I did not know the map SIZE had three components. I thought that the docs
indicated that there was just a width and height to the size (in pixels). Perhaps that is why you could
not reproduce my results.
Best,
On Wed, 04 Jul 2007 09:03:45 -0400, Yewondwossen Assefa wrote
> Doug,
>
> Sorry for the late answer. I just tried your map file with your
> data. Just using php mapscript : $map_file="c:/msapps/tmp/bug_imagemap_doug/test.map";
> $gpoMap = ms_newMapObj("$map_file");
> $img = $gpoMap->draw();
> $url = $img->saveWebImage();
>
> Doug Williams wrote:
> > I see now how the classitem is just cramed into the title for the
> > imagemap areas. With a little jiggling out the generated imagemap
> > output I think I can create what I want.
> >
> > And I suppose that the squishing of the shape file to fit the image size
> > was the problem with the coords. Agreed?
> >
>
> I could not reproduce this : I tried different map size (smallest
> I tried is SIZE 2 2 2). I get coords that look like: coords=" 1,
> 0" or coords=" 0,0" but never with empty values. Not sure if my
> tests are significant.
>
> > Thanks for responding to my plea for help. Discussing it with you this
> > way helped me to realize what was going on.
> >
>
> The formatoptions docs available is the source code (mapimage.c). I
> think that is all the docs that exists afaik. There is a desciption
> of it at the begining but looking through the code, I see that some
> format options are used but not described such as (SYMBOLHREF,
> SCRIPT, DXF, SKIPENDTAG). It would be nice to update the
> http://mapserver.gis.umn.edu/docs/howto/imagemaps at one point but I
> am not familiar enough to do it.
>
> Later,
>
> > Cheers,
> > Doug
> >
> >
> > On Jun 29, 2007, at 6:17 AM, Yewondwossen Assefa wrote:
> >
> >> Doug,
> >>
> >> I am not very familiar with imagemap output but what I can certainly
> >> do is test the output results and see why there is a problem with the
> >> "coords" output, if you provide me a simple map and data. Note that I
> >> will do the tests with Mapserver svn (to be 5.0 release). Note that I
> >> did a couple of tests with tests data that I have here and the
> >> "cooords" result seem to be correct.
> >>
> >> Later,
> >>
> >> Doug Williams wrote:
> >>> Hi All, Jeff, Assefa, I have made a phpmapscript to generate an
> >>> imagemap for my drawn map so when mousing over the map information
> >>> about the shp below the mouse cursor is displayed beside the cursor.
> >>> I like the way it works,
> >>> http://www.wildweb.org/imagemap/
> >>> except for a couple of questions! I am using version 4.8 on linux.
> >>> 1) Some of the polygon coords for the map areas begin with a comma,
> >>> such as
> >>> <map name="map_test" width="600" height="300">
> >>> <area onMouseOver="handleClick(event,'boxinfo','show it',' NAME ');
> >>> return false;" onMouseOut="handleClick(event,'boxinfo','hide it','');
> >>> return false;" title="" shape="poly" coords=" 96,70, 96,69, 95,68,
> >>> 105,68, 105,73, 101,73, 101,74, 95,74, 95,73, 93,73, 94,72, 93,72,
> >>> 93,70, 92,70, 92,69, 93,70, 95,70, 96,70, 96,71, 95,71, 95,72, 96,71,
> >>> 96,70" />
> >>> <area onMouseOver="handleClick(event,'boxinfo','show it',' NAME ');
> >>> return false;" onMouseOut="handleClick(event,'boxinfo','hide it','');
> >>> return false;" title="" shape="poly" coords=", 95,69" />
> >>> ......
> >>> </map>
> >>> Notice how the coords for the second area begin with a comma. Does
> >>> that mean I have a bad shape file? Those commas seem problematic for
> >>> some browsers when using the imagemap. If I delete the commas by
> >>> brute force and then display the edited html file, the imagemap works
> >>> properly in all the browsers I have checked, although I guess that
> >>> the areas with just two coords are not good...
> >>> 2) I cannot figure how to get the attribute data for the shape. The
> >>> cgi version of mapserver describes using a template, but where the
> >>> cgi version describes the use of templates for other tasks, I have
> >>> not found them useful for phpmapscript version, nor am I using, for
> >>> this script, the header and footer templates as described in the cgi
> >>> version imagemap creation tutorial, as setting the OUTPUTFORMAT
> >>> driver to imagemap along with the correct FORMATOPTIONs generates
> >>> everything as described in the cgi version tutorial, except I am not
> >>> understanding how to get the attribute data other than the shp coords.
> >>> The cgi version says the the mode would need to be set to nquery. I
> >>> think this means that phpmapscript does a drawQuery(). Attempting
> >>> this results in:
> >>> Warning: [MapServer Error]: msDrawQueryMap(): Unable to initialize
> >>> image. in /.../index.php on line 184
> >>> Fatal error: Call to a member function on a non-object in
> >>> /.../index.php on line 185
> >>> It does not seem necessary to use drawQuery(). draw() provides the
> >>> coords as desired (w/ the question about the commas above).
> >>> My belief is that I would grab the attribute data in the
> >>> FORMATOPTION statement. Am I on the right track? Does this
> >>> capability exist as part of the OUTPUTFORMAT imagemap driver in
> >>> phpmapscript?
> >>> This is my OUTPUTFORMAT to create the imagemap:
> >>> OUTPUTFORMAT
> >>> NAME imagemap
> >>> DRIVER imagemap
> >>> FORMATOPTION "MAPNAME=map_test"
> >>> FORMATOPTION "POLYHREF="
> >>> FORMATOPTION "POLYMOUSEOUT=handleClick(event,'boxinfo','hide
> >>> it',''); return false;"
> >>> FORMATOPTION "POLYMOUSEOVER=handleClick(event,'boxinfo','show
> >>> it','%NAME%'); return false;"
> >>> FORMATOPTION "TITLE="
> >>> MIMETYPE "text/html"
> >>> END
> >>> The %NAME% was based on the sections discussing cookie variables and
> >>> such, and NAME just ends up displayed without the % chars. [NAME] as
> >>> shown in the cgi version doc produces [NAME] as output. I have tried
> >>> escaping the ' char with \, but that results in an error. Is there a
> >>> code to put in the FORMATOPTION statement to obtain attribute data?
> >>> Does the layer definition matter? Here is my layer definition:
> >>> LAYER
> >>> NAME "lakes"
> >>> DATA esri/world/lakes
> >>> STATUS on
> >>> PROJECTION
> >>> "proj=latlong"
> >>> END #projection
> >>> TYPE POLYGON
> >>> METADATA
> >>> "DESCRIPTION" "Lakes"
> >>> "RESULT_FIELDS" "NAME SURF_ELEV DEPTH"
> >>> END
> >>> # HEADER "lakes_header.html"
> >>> # FOOTER "lakes_footer.html"
> >>> TEMPLATE ""
> >>> CLASS
> >>> NAME "States"
> >>> OUTLINECOLOR 0 0 0
> >>> END
> >>> END
> >>> I have tried this with a couple of different layers and like the
> >>> imagemap result (aside from not understanding why some area coords
> >>> begin with a comma), but without the attribute data I am not sure
> >>> what to do with it!
> >>> All ideas would be much appreciated,
> >>> Doug
> >>
> >>
> >> ------------------------------------------------------------------
> >> Assefa Yewondwossen
> >> Software Analyst
> >>
> >> Email: assefa at dmsolutions.ca
> >> http://www.dmsolutions.ca/
> >>
> >> Phone: (613) 565-5056 (ext 14)
> >> Fax: (613) 565-0925
> >> ----------------------------------------------------------------
> >
> >
>
> --
> ----------------------------------------------------------------
> Assefa Yewondwossen
> Software Analyst
>
> Email: assefa at dmsolutions.ca
> http://www.dmsolutions.ca/
>
> Phone: (613) 565-5056 (ext 14)
> Fax: (613) 565-0925
> ----------------------------------------------------------------
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