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
--
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Assefa Yewondwossen
Software Analyst
Email: [EMAIL PROTECTED]
http://www.dmsolutions.ca/
Phone: (613) 565-5056 (ext 14)
Fax: (613) 565-0925
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