Dear Andrew
Thank you for your reply
When I start building this software, I was drawing the map directly from
files without loading it into memory
It was not very slow, but it was very complicated , so I ignored this
solution.
I believe I will reconsider this solution again
I used Loading into memory to get the advantage of discarding all changes
without saving them to disk
but, I have solved this problem in table files, by using tmp files for
saving or discarding changes
Table data changes by editing or by VB script code will be saved into tmp
files until you save it
I am still working in "Undo function" and viewing raster images
Thank you and best personal regards
Mohamed Elshayal
----- Original Message -----
From: "Andrew Williams" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Tuesday, April 18, 2006 1:37 AM
Subject: Re: [UMN_MAPSERVER-USERS] my new beta GIS Software ElshayalSmart
for map and data base editing and drawing
Mohamed,
It has most of what an entry level GIS would need. The one thing that I
look for in new GIS tools is the speed with which they open a file. Your
system is quite slow. The reason is due to your application opening the
entire file into memory. For small files this is OK, for large files this
is a problem. The applications that open files quickly use spatial
indexing to optimise the amount of information loaded into memory at any
one time. Make better use of spatial indexing (it's hard I know) and you
will have a good tool.
You should be proud of your achievement.
regards
Andrew
-----Original Message-----
From: Mr. Mohamed Elshayal [mailto:[EMAIL PROTECTED]
Sent: Tue 4/18/2006 2:15 AM
To: [email protected]
Cc:
Subject: [UMN_MAPSERVER-USERS] my new beta GIS Software ElshayalSmart for
map and data base editing and drawing
Dear Sirs,
I have published my new beta GIS Software ElshayalSmart for map and data
base editing and drawing
Kindly, please download it at http://www.smartwebonline.com/
or at
http://www.gismagazine.com/downloads/download.php?id=143
and test it and inform me by your ideas and points of view
Thank you and best personal regards
Mohamed Elshayal
