[reportlab-users] Problem adding image
Henning von Bargen
H.vonBargen at t-p.com
Fri Apr 27 02:35:48 EDT 2007
> From: "Jim Steil" <jim at qlf.com>
> Subject: [reportlab-users] Problem adding image
> I'm having trouble getting an image to consistently display
> on a report
> I'm generating. Below are two images. They are both generated using
> the EXACT same program. One time I called it and the brown-ish image
> shows up. Then when I immediately call it again, the image
> doesn't show
> up. This doesn't happen with any predictable regularity.
> Sometimes the
> image is displayed, and sometimes it isn't. It doesn't matter which
> order I run it, I can't find any pattern to why it sometime
> displays the
> image and others, it doesn't. To summarize how I'm building
> this, this
> is what I'm doing:
> 1. Create a table with 2 rows, 1 column and set the heights,
> backgrounds, borders, etc.
> 2. Inside, build a drawing using the following code:
> binDrawing = Drawing(60, 60)
> if bobStatus == 0:
> binDrawing.add(Image(19.6,40.55,58.85,binLevelHeight,'%s/brown.jpg' %
> 3. Inside the table cell, add the heading and the drawing. The
> listData is the table data that I'm modifying, I create it in a prior
> step and I just 'update' the data here.
> listData[headerRow[currentCell]][headerCol[currentCell]] =
> listData[drawingRow[currentCell]][drawingCol[currentCell]] =
> I'm really confused as to why it will work sometimes but not others.
> I've done all kinds of verification to know that it IS definitely
> finding the image. I've made sure that it isn't a layering
> issue, that
> the image exists but is behind the Rectangle that I've added.
> Is there anyone that has mastered the Graphics package run
> into anything
> like this before? Any clues as to where I can go to figure
> out what is
> causing this? Any responses would be appreciated. I'm happy to post
> more code if you think it would help.
I think you should try to narrow it down to a simple, working
example program (using fiexed data).
I suspect that there are some side-effects that influence your
current program (without having seen it).
For example, is your program multi-threaded? Or is there an error
at the OS level that is silently ignored by your program?
I cannot imagine the same program with the same data in the same
environment/situation to behave differently.
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