[Mapserver-users] RE: WMS Client for ArcView 3.X

[Julia Harrell]

Shane & Ken

Thanks for the suggestions. I already tried switching to
single band imagery and messing with the nominal 
colormap, but the results weren't so good in my case.
See: http://204.211.135.111/av3wmsconnector.htm
for an illustration of the problem. I tried a few 
things with the other colors in the colormap, but it
did not help. 

Let us know when the pro version is ready for beta testing!

- Julia Harrell
  NC CGIA



-----Original Message-----
From: kenboss [mailto:kenboss at dilbert.dnr.state.mn.us] 
Sent: Thursday, October 09, 2003 3:12 PM
To: mapserver-users at lists.gis.umn.edu; julia.harrell at ncmail.net
Subject: Re: [Mapserver-users] FW: WMS Client for ArcView 3.X

ArcView 3.x is pretty much braindead when it comes to transparency in 
truecolor/24-bit/3-band images.  You can set a transparent color on a 
single-band colormapped image, but there is no such functionality
corresponding 
to multi-band images, unless you want to shell out extra cash for ESRI's
Image 
Analyst extension.

Ken Boss
MN DNR Forestry Resource Assessment



-----Original Message-----
From: Shane Nelson [mailto:snelson at refractions.net] 
Sent: Thursday, October 09, 2003 3:25 PM
To: mapserver-users at lists.gis.umn.edu
Cc: julia.harrell at ncmail.net


> Does anyone have any workarounds or suggestions for fooling the 
> colormaps into thinking that 255,255,255 is the 'transparent' color, 
> so I can look at more than one layer At a time ?
> 


Sorry, the WMS Client for Arcview 3 doesn't support transparent images yet.

We plan to add this functionality to the Pro version.

In the meantime you can fool it into creating a transparent layer.  

This example works with the "Mars Landings.ogc" and "Mars Topography.ogc" 
that were installed in the Examples folder with the latest beta.  Load 
those two files as separate themes, then select the Mars Landings.ogc theme.


Open the Image Legend Editor by double clicking on the "Mars Landings.ogc"
theme.  
Select "Single Band" then click the colormap button.  Press the Nominal
button.  
Now the second color in the list should be white. Now set the white color to
be 
transparent by double clicking on the white color and selecting X (the first
color, 
white with an X through it) color in the colormap.  

Now you should be able to view the landings over top of the topography.  

> stashing its' images? I'm seeing a lot of ximg.bip & ximg.hdr files in 
> my Documents and Settings\xxx\Local Settings\Temp directory that have 
> the right timestamps - is this them? I tried opening them in Irfanview 
> and PSP, but neither could read them, and I tried loading them into 
> Arcview, but get nothing viewable....

That's the right location. The .bip file contains the image in RAW RGB
format.  

To open them in PSP8 you would have to select the RAW image type then
manually 
enter the width/height, color channels and file structure information.  This
is 
easily done, most of the information you need is stored in the associated
.hdr file.   

For now all the information except the width/height is the same for all .bip

images the extension creates.  Color channels should be set to "Three
Channel RGB", 
Header Size is 0, "Interleaved (RGB RGB ..." should be selected. The order
should 
be "Order RGB" and "Flipped (bottom up)" should NOT be selected.


Shane