[mapserver-users] Hide Layers on HTML legend where filtered results are null

Thu, 14 Nov 2002 11:27:01 -0600

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I've waded through hundreds and hundreds of archived messages and have not
found any guidance and am hoping someone can point me in the right
direction.

I am displaying layers on an HTML legend

The content of those layers is controlled by passing a filter value as part
of my GET string (map_mylayername_filter=somevalue)

If the filter doesn't "find" any records, I would like to be able to hide
that layer on my legend

Any tips/guidance that anyone could provide would be greatly appreciated

MapServer 3.6.1, WinNT/IIS4 - Win2000/IIS5

Thanks

****************************************************************************
*********************************
Steve Palmer
GIS Developer
406-728-9323 x206

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META HTTP-EQUIV=3D"Content-Type" CONTENT=3D"text/html; =
charset=3Diso-8859-1">
<META NAME=3D"Generator" CONTENT=3D"MS Exchange Server version =
5.5.2653.12">
<TITLE>Hide Layers on HTML legend where filtered results are =
null</TITLE>
</HEAD>
<BODY>

<P><FONT SIZE=3D2 FACE=3D"Arial">I've waded through hundreds and =
hundreds of archived messages and have not found any guidance and am =
hoping someone can point me in the right direction.</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">I am displaying layers on an HTML =
legend</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">The content of those layers is =
controlled by passing a filter value as part of my GET string =
(map_mylayername_filter=3Dsomevalue)</FONT></P>

<P><FONT SIZE=3D2 FACE=3D"Arial">If the filter doesn't &quot;find&quot; =
any records, I would like to be able to hide that layer on my =
legend</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Any tips/guidance that anyone could =
provide would be greatly appreciated</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">MapServer 3.6.1, WinNT/IIS4 - =
Win2000/IIS5</FONT>
</P>

<P><FONT SIZE=3D2 FACE=3D"Arial">Thanks</FONT>
</P>

<P><FONT SIZE=3D2 =
FACE=3D"Arial">*********************************************************=
****************************************************</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">Steve Palmer</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">GIS Developer</FONT>
<BR><FONT SIZE=3D2 FACE=3D"Arial">406-728-9323 x206<B></B></FONT>
</P>

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