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BIG!!!! Pictures in General fields and VERY slow
Message
From
13/12/2003 07:20:05
 
 
To
13/12/2003 06:34:26
General information
Forum:
Visual FoxPro
Category:
Pictures and Image processing
Miscellaneous
Thread ID:
00858269
Message ID:
00858886
Views:
15
I have to agree with you Tore. I have done a lot of work with pictures and have found that storing them in a logical folder structure is a better solution that using memo fields. The bloat issue is a big one if the stuff changes. I also like the ability to edit a picture directly without having to extract it and reinsert it. Not to mention the 2Gb limit.

Later.


>Hi Jonathan
>
>Your comment that it is not more logical to keep each picture in separate files than to include them in a memo file is your own opinion, and of course you have every right to have your own opinion. However, I must argue that I can see absolutely no advantage in doing so, but it mat depend on the number of pictures, and whether they are static or may be changed in some way. I will argue that in most cases seperate pictures is a much better idea, and far more extensible. Also keep in mind that if you want to change some pictures, with your approach you will run into memo file bloat.
>
>In all the apps I have made over the last 20 years, I have never had a case where your method would have given me any advantage.
>
>>I'm a month late to this thread but for storing picture I've have good luck using a binary memo field instead of either a general field or storing the name of a separate image file. Doing so reduces file bloat (caused by the general field containing not only the image but also a preview picture), and in my mind it's no more logical to keep each picture in an entirely separate file than it would be for any other column of data. How-to details were published in the Advisor Answer's column of July '99's Foxpro Advisor - basically you use APPEND MEMO [fieldname] from [filename] OVERWRITE to get the picture into the binary memo field and COPY Memo [tablename.fieldname] TO [filename] to get it back out.
In the End, we will remember not the words of our enemies, but the silence of our friends - Martin Luther King, Jr.
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