Re: Where's my image?

[pbmoses@xxxxxxxx]

Ben,

I think that you may be barking up the wrong tree on this one. I believe that the problem
you are seeing 
lies withint Internet Explorer itself and not the LAS Server. 
I haven't used Microsoft or IE in a little over a year, however I did find the following
MS technical 
bulletin addressing an issue similar to  yours. 

http://support.microsoft.com/?kbid=283807

While I am not absolute authority on the LAS server, this (red x and image issues) look to
be most likely 
a browser issue rather than a server issue. 

Hope this helps!

Phil Moses
Physical Oceanography Research Division 
Scripps Institution of Oceanography



> Hello All,
> 
> I just finished installation of LAS 6.3 on a Red Hat Linux 7.2 machine and I
>  have a curious problem as my first task of debugging.
> 
> I used the browser (Mozilla 0.9.2.1) on the machine I installed the software
>  on (I'll call this local/Mozilla) and I was able to properly bring up the i
> nstall test datasets and variables menu pages and the map applet page (I was
>  surprised that the old Mozilla browser (without a java plugin) displayed th
> e map applet OK) and then it displayed the "xy (lat/lon) slice" image on the
>  same page.  It worked!
> 
> Later I went to my nice modern desktop machine running Windows XP and Intern
> et Explorer 6.0 (which I will call remote/IE) and it didn't work.  The insta
> ll test datasets and variables menu pages and the map applet page displayed 
> OK, then when it displayed the "xy (lat/lon) slice" image (in a separate win
> dow) the image was just a small (28 x 30 pixel) rectangle with a red x in it
>   
> I still have the same image problem if I select "Send all plot outpu
> t to main window" and display everything in the same browser window.
> 
> I checked the LAS logs and here's what I found.  Incidentally, the Installat
> ion documentation, in the Debugging LAS section, say "Copious debug informat
> ion is written to the file $lasroot/las/laserror.log.", but there is no lase
> rror.log (here or anywhere on my machine).  I created it by hand but nothing
>  gets written into it.  Should this log be present?
> 
> The output from "debug" for the two different servers, showing the differenc
> e between the outputs is:
> 
> >From debug (local/Mozilla)
> 
> Browser = Java/1.4.2_04
> Got XML request:
> <?xml version="1.0"?> . . .<range low="-180" type="x" high="180" /><range lo
> w="-89" type="y" high="89" /> . . .</lasRequest>
> 
> >From debug (remote/IE6.0)
> 
> Browser = Java/1.4.2_04
> Got XML request:
> <?xml version="1.0"?> . . . <range low="-180.0" type="x" high="180.0" /><ran
> ge low="-89.0" type="y" high="89.0" /> . . .</lasRequest>
> 
> 
> They're identical, except that the (local/Mozilla) gave values as integers (
> e.g. 180) and the (remote/IE6.0) gave values as decimals (e.g. 180.0).  Curi
> ous, but probably not important.
> 
> 
> The output from "access" shows this one entry for (local/Mozilla) - a single
>  GET:
> 
> 
> DATE: Mon Jun 14 17:10:38 2004
> RQST: GET /las-bin/LASserver.pl?xml=%3C%3Fxml+version%3D%221.0%22%3F%3E%3Cla
> sRequest+package%3D%22%22+href%3D%22file%3Alas.xml%22+%3E%3Clink+match%3D%22
> %2Flasdata%2Foperations%2Fshade%22+%2F%3E%3Cproperties+%3E%3Cferret+%3E%3Csi
> ze+%3E.5%3C%2Fsize%3E%3Cformat+%3Eshade%3C%2Fformat%3E%3C%2Fferret%3E%3C%2Fp
> roperties%3E%3Cargs+%3E%3Clink+match%3D%22%2Flasdata%2Fdatasets%2Fcoads_clim
> atology_cdf%2Fvariables%2Fairt%22+%2F%3E%3Cregion+%3E%3Crange+low%3D%22-180%
> 22+type%3D%22x%22+high%3D%22180%22+%2F%3E%3Crange+low%3D%22-89%22+type%3D%22
> y%22+high%3D%2289%22+%2F%3E%3Cpoint+v%3D%2215-Jan%22+type%3D%22t%22+%2F%3E%3
> C%2Fregion%3E%3C%2Fargs%3E%3C%2FlasRequest%3E
> HOST: 172.16.7.82
> CLNT: Java/1.4.2_04
> XML: <?xml version="1.0"?><lasRequest package="" href="file:las.xml" ><link 
> match="/lasdata/operations/shade" /><properties ><ferret ><size >.5</size><f
> ormat >shade</format></ferret></properties><args ><link match="/lasdata/data
> sets/coads_climatology_cdf/variables/airt" /><region ><range low="-180" type
> ="x" high="180" /><range low="-89" type="y" high="89" /><point v="15-Jan" ty
> pe="t" /></region></args></lasRequest>
> CACHE: true
> 
> 
> But the next two entries are the following for the (remote/IE6.0) - two iden
> tical GETs.  All three GETs are the same except for the previously noted dif
> ference between integer and decimal values:
> 
> DATE: Mon Jun 14 17:24:00 2004
> RQST: GET /las-bin/LASserver.pl?xml=%3C%3Fxml+version%3D%221.0%22%3F%3E%3Cla
> sRequest+package%3D%22%22+href%3D%22file%3Alas.xml%22+%3E%3Clink+match%3D%22
> %2Flasdata%2Foperations%2Fshade%22+%2F%3E%3Cproperties+%3E%3Cferret+%3E%3Csi
> ze+%3E.5%3C%2Fsize%3E%3Cformat+%3Eshade%3C%2Fformat%3E%3C%2Fferret%3E%3C%2Fp
> roperties%3E%3Cargs+%3E%3Clink+match%3D%22%2Flasdata%2Fdatasets%2Fcoads_clim
> atology_cdf%2Fvariables%2Fairt%22+%2F%3E%3Cregion+%3E%3Crange+low%3D%22-180.
> 0%22+type%3D%22x%22+high%3D%22180.0%22+%2F%3E%3Crange+low%3D%22-89.0%22+type
> %3D%22y%22+high%3D%2289.0%22+%2F%3E%3Cpoint+v%3D%2215-Jan%22+type%3D%22t%22+
> %2F%3E%3C%2Fregion%3E%3C%2Fargs%3E%3C%2FlasRequest%3E
> HOST: 172.16.7.82
> CLNT: Java/1.4.2_04
> XML: <?xml version="1.0"?><lasRequest package="" href="file:las.xml" ><link 
> match="/lasdata/operations/shade" /><properties ><ferret ><size >.5</size><f
> ormat >shade</format></ferret></properties><args ><link match="/lasdata/data
> sets/coads_climatology_cdf/variables/airt" /><region ><range low="-180.0" ty
> pe="x" high="180.0" /><range low="-89.0" type="y" high="89.0" /><point v="15
> -Jan" type="t" /></region></args></lasRequest>
> 
> DATE: Mon Jun 14 17:24:00 2004
> RQST: GET /las-bin/LASserver.pl?xml=%3C%3Fxml+version%3D%221.0%22%3F%3E%3Cla
> sRequest+package%3D%22%22+href%3D%22file%3Alas.xml%22+%3E%3Clink+match%3D%22
> %2Flasdata%2Foperations%2Fshade%22+%2F%3E%3Cproperties+%3E%3Cferret+%3E%3Csi
> ze+%3E.5%3C%2Fsize%3E%3Cformat+%3Eshade%3C%2Fformat%3E%3C%2Fferret%3E%3C%2Fp
> roperties%3E%3Cargs+%3E%3Clink+match%3D%22%2Flasdata%2Fdatasets%2Fcoads_clim
> atology_cdf%2Fvariables%2Fairt%22+%2F%3E%3Cregion+%3E%3Crange+low%3D%22-180.
> 0%22+type%3D%22x%22+high%3D%22180.0%22+%2F%3E%3Crange+low%3D%22-89.0%22+type
> %3D%22y%22+high%3D%2289.0%22+%2F%3E%3Cpoint+v%3D%2215-Jan%22+type%3D%22t%22+
> %2F%3E%3C%2Fregion%3E%3C%2Fargs%3E%3C%2FlasRequest%3E
> HOST: 172.16.7.82
> CLNT: Java/1.4.2_04
> XML: <?xml version="1.0"?><lasRequest package="" href="file:las.xml" ><link 
> match="/lasdata/operations/shade" /><properties ><ferret ><size >.5</size><f
> ormat >shade</format></ferret></properties><args ><link match="/lasdata/data
> sets/coads_climatology_cdf/variables/airt" /><region ><range low="-180.0" ty
> pe="x" high="180.0" /><range low="-89.0" type="y" high="89.0" /><point v="15
> -Jan" type="t" /></region></args></lasRequest>
> CACHE: true
> CACHE: true
> 
> 
> So, I looked in the <apacheRoot>/logs/access_log and found some useful infor
> mation.  This first pair of entries is from (local/Mozilla) - a GET /las-bin
> / followed by a GET /las-output.  I assume this is what I should be seeing f
> or proper operation.
> 
> 172.16.7.82 - - [14/Jun/2004:17:10:38 +0900] "GET /las-bin/LASserver.pl?xml=
> %3C%3Fxml+version%3D%221.0%22%3F%3E%3ClasRequest+package%3D%22%22+href%3D%22
> file%3Alas.xml%22+%3E%3Clink+match%3D%22%2Flasdata%2Foperations%2Fshade%22+%
> 2F%3E%3Cproperties+%3E%3Cferret+%3E%3Csize+%3E.5%3C%2Fsize%3E%3Cformat+%3Esh
> ade%3C%2Fformat%3E%3C%2Fferret%3E%3C%2Fproperties%3E%3Cargs+%3E%3Clink+match
> %3D%22%2Flasdata%2Fdatasets%2Fcoads_climatology_cdf%2Fvariables%2Fairt%22+%2
> F%3E%3Cregion+%3E%3Crange+low%3D%22-180%22+type%3D%22x%22+high%3D%22180%22+%
> 2F%3E%3Crange+low%3D%22-89%22+type%3D%22y%22+high%3D%2289%22+%2F%3E%3Cpoint+
> v%3D%2215-Jan%22+type%3D%22t%22+%2F%3E%3C%2Fregion%3E%3C%2Fargs%3E%3C%2FlasR
> equest%3E HTTP/1.1" 200 352 "-" "Java/1.4.2_04"
> 
> 172.16.7.82 - - [14/Jun/2004:17:10:38 +0900] "GET /las-output/835c7e80a50465
> 2263d4bbac2126ba43.gif HTTP/1.1" 304 - "http://172.16.7.82:8080/las/servlets
> /data_popup" "Mozilla/5.0 (X11; U; Linux i686; en-US; rv:0.9.2.1) Gecko/2001
> 0901"
> 
> 
> The next two entries are from (remote/IE6.0) and show two identical GET /las
> -bin/,  without any GET /las-output.
> 
> 172.16.7.82 - - [14/Jun/2004:17:24:01 +0900] "GET /las-bin/LASserver.pl?xml=
> %3C%3Fxml+version%3D%221.0%22%3F%3E%3ClasRequest+package%3D%22%22+href%3D%22
> file%3Alas.xml%22+%3E%3Clink+match%3D%22%2Flasdata%2Foperations%2Fshade%22+%
> 2F%3E%3Cproperties+%3E%3Cferret+%3E%3Csize+%3E.5%3C%2Fsize%3E%3Cformat+%3Esh
> ade%3C%2Fformat%3E%3C%2Fferret%3E%3C%2Fproperties%3E%3Cargs+%3E%3Clink+match
> %3D%22%2Flasdata%2Fdatasets%2Fcoads_climatology_cdf%2Fvariables%2Fairt%22+%2
> F%3E%3Cregion+%3E%3Crange+low%3D%22-180.0%22+type%3D%22x%22+high%3D%22180.0%
> 22+%2F%3E%3Crange+low%3D%22-89.0%22+type%3D%22y%22+high%3D%2289.0%22+%2F%3E%
> 3Cpoint+v%3D%2215-Jan%22+type%3D%22t%22+%2F%3E%3C%2Fregion%3E%3C%2Fargs%3E%3
> C%2FlasRequest%3E HTTP/1.1" 200 352 "-" "Java/1.4.2_04"
> 
> 172.16.7.82 - - [14/Jun/2004:17:24:01 +0900] "GET /las-bin/LASserver.pl?xml=
> %3C%3Fxml+version%3D%221.0%22%3F%3E%3ClasRequest+package%3D%22%22+href%3D%22
> file%3Alas.xml%22+%3E%3Clink+match%3D%22%2Flasdata%2Foperations%2Fshade%22+%
> 2F%3E%3Cproperties+%3E%3Cferret+%3E%3Csize+%3E.5%3C%2Fsize%3E%3Cformat+%3Esh
> ade%3C%2Fformat%3E%3C%2Fferret%3E%3C%2Fproperties%3E%3Cargs+%3E%3Clink+match
> %3D%22%2Flasdata%2Fdatasets%2Fcoads_climatology_cdf%2Fvariables%2Fairt%22+%2
> F%3E%3Cregion+%3E%3Crange+low%3D%22-180.0%22+type%3D%22x%22+high%3D%22180.0%
> 22+%2F%3E%3Crange+low%3D%22-89.0%22+type%3D%22y%22+high%3D%2289.0%22+%2F%3E%
> 3Cpoint+v%3D%2215-Jan%22+type%3D%22t%22+%2F%3E%3C%2Fregion%3E%3C%2Fargs%3E%3
> C%2FlasRequest%3E HTTP/1.1" 200 352 "-" "Java/1.4.2_04"
> 
> 
> I didn't see anything useful in "errors" or "error=log".  The output in "vel
> ocity.log" was huge.  It showed some errors but they seemed to be about the 
> same for both local and remote.  I'll look more closely at this if it would 
> be helpful.
> 
> Anybody understand why this would happen?  Any more useful information I cou
> ld look for, or additional debugging information I can get by turning on deb
> ugging switches?
> 
> Thank you,
> 
> Ben
> 
> [] ScreenSaves.doc 
> 
>