[Thread Prev][Thread Next][Index]

Re: bookmarking images



Have you considered adding some way to do this? This would be highly desirable based on the type of usage we get for our current image pages. A lot of people decide which variables and regions they are interested in, set a bookmark, and check back each time our model output updates.

Also, we put together web pages containing predefined collections of images. We could use links to a LAS to generate these images on demand if there was a way to encode the constraints in the URL.

- Joe


On Wednesday, December 18, 2002, at 03:51 PM, Jonathan Callahan wrote:

Joe,

The output filename does not expire with each session. It is generated
with the Digest-MD5 perl module. This module converts arbitrary input
into an RSA encrypted string, called a 'digest'. In the case of LAS,
the arbitrary input is the xml request coming to the data server.

So, whenever you ask for exactly the same thing, you will generate
exactly the same encrypted file name. Unfortunately, you cannot
regenerate the xml request from the file name.

This doesn't address your issue of a permanent URL for a specific output
graphic. Currently there is no mechanism for this in LAS.


-- Jon


Joe Wielgosz wrote:

Is there a way to bookmark a las-generated image so that it will be
automatically regenerated if it has expired from the cache?

I assume that URLs of the form
las-output/d6c5e016e894cd5f0c1995547cc00e46.gif are just temporary
unique ID's which are only valid within a session..

- Joe

Joe Wielgosz / joew@cola.iges.org
---------------------------------------------------
Center for Ocean-Land-Atmosphere Studies (COLA)
Institute for Global Environment and Society (IGES)
http://www.iges.org


Joe Wielgosz / joew@cola.iges.org
---------------------------------------------------
Center for Ocean-Land-Atmosphere Studies (COLA)
Institute for Global Environment and Society (IGES)
http://www.iges.org



[Thread Prev][Thread Next][Index]

Dept of Commerce / NOAA / OAR / PMEL / TMAP
Contact Us | Privacy Policy | Disclaimer | Accessibility Statement