Warning 'towgs84' is null or not an object popup if the CS of the map is CA-I (NAD27 California State Planes, Zone I(401), US Foot)

[liuar]

1. Create a map using NAD27 as coordinate system 2. View the the map 3. A warning popup - Warning 'towgs84' is null or not an object

[liuar]

In proj4js.js

var datumDef=Proj4js.Datum[this.datumCode]
if(datumDef)
{
    this.datum_params=datumDef.towgs84.split(',');
    ....
}

if the datumCode is NAD27(CA-I), the datumDef will not contain a property named towgs84. So, to fix this problem or the workaround of this defect is add "&& datumDef.towgs84" to the if clause to make sure towgs84 is included in datumDef.

[liuar]

Hi Mike,

Could you review my solution and submit it if there's no problem? Since I can only can the compressed version of proj4js

Regards,
Arthur

[madair]

this was fixed in a later version of proj4js. I will update to the most recent version.

[madair]

fixed in trunk and 2.0 branch, should this be applied to the adsk/2.2gp branch?

[chrisclaydon]

The 2.2gp branch should not be updated to the latest version of proj4js. I'll modify the existing version of proj4js-compressed.js with this specific fix.

[chrisclaydon]

Applied this fix to proj4js-compressed.js in adsk/2.2gp branch with changeset:

http://trac.osgeo.org/fusion/changeset/2148