[Chameleon] epsg code

Paul Spencer pspencer at dmsolutions.ca
Fri Apr 15 12:07:09 EDT 2005


Hi Kevin,

sorry, I saw this before but didn't have time to dig into it.  I 
probably won't have a chance to look at it before next week sometime.

Cheers

Paul

Kevin Flanders wrote:
> Hi Paul,
> 
> I tried a few different lines....but did not work.....I think I am missing
> something...
> 
> <view name="Downtown" minx="951675" miny="8732837" maxx="3253733"
> maxy="2424523" SRS="+proj=tmerc +lat_0=42.500000000 +lon_0=-71.666666667
> +k=0.9999967 +x_0=300000.000 +y_0=0.000 +ellps=GRS80 +datum=NAD83
> +units=us-ft"/>
> 
> I also tried:
> 
> <view name="Downtown" minx="951675" miny="8732837" maxx="3253733"
> maxy="2424523" +proj="tmerc" +lat_0="42.500000000" +lon_0="-71.666666667"
> +k="0.9999967" +x_0="300000.000" +y_0="0.000" +ellps="GRS80" +datum="NAD83"
> +units="us-ft"/>
> 
> what am I missing?
> 
> 
> 
> 
> 
> 
> 
> 
> Kevin,
> 
> you should be able to create proj4 projections in the quickzoom widget
> tags by putting the entire proj definition on one line with each element
> starting with a +, for instance a standard lat/lon projection would be
> 
> +proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs
> 
> (this just happens to be the same proj string used by EPSG:4326 ...)
> 
> Cheers
> 
> Paul
> 
> Kevin Flanders wrote:
> 
>>I have noticed that the quickzoom function requires a standard epsg code
>>in order to execute.  I have several projects that use a non-standard
>>coordinate/projection system.....the standard epsg code calls for units
>>of meters, but these clients use units of feet.  Is there another way to
>>use the quickzoom feature if no standard epsg code exists?
>>
>>I understand I can create my own codes?  What are those steps?
>>
>>
>>
>>Kevin
>>
>>
>>------------------------------------------------------------------------
>>
>>_______________________________________________
>>Chameleon mailing list
>>Chameleon at lists.maptools.org
>>http://lists.maptools.org/mailman/listinfo/chameleon
> 
> _______________________________________________
> Chameleon mailing list
> Chameleon at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/chameleon
> _______________________________________________
> Chameleon mailing list
> Chameleon at lists.maptools.org
> http://lists.maptools.org/mailman/listinfo/chameleon
> 

-- 
+-----------------------------------------------------------------+
|Paul Spencer                           pspencer at dmsolutions.ca   |
+-----------------------------------------------------------------+
|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|
+-----------------------------------------------------------------+


More information about the Chameleon mailing list