[reportlab-users] Problem adding image

[Henning von Bargen]

> From: "Jim Steil" <jim at qlf.com>

> Subject: [reportlab-users] Problem adding image

>

> Hi:

> 

> 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)

> 

> binDrawing.add(Rect(19.0,40,60,binDrawHeight,fillColor=colors.white))

> 

>         if bobStatus == 0:

> 

>  

> binDrawing.add(Image(19.6,40.55,58.85,binLevelHeight,'%s/brown.jpg' %

> (imagePath)))

> 

> 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]] =

> binHeader

> 

>         listData[drawingRow[currentCell]][drawingCol[currentCell]] =

> binDrawing

> 

> 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.

Henning