Arghh, sorry for the noise!

When hovering over the data-driven input button not so hectically, I discovered the explanation that it expects a 0 or 1.
So
case when
'mypath'|| @atlas_pagename ||'_1.jpeg' IS NULL
THEN
0
END

did the trick!

Just amazing!!!

Thanx
Bernd

Am 26.10.2016, 22:19 Uhr, schrieb DelazJ <del...@gmail.com>:

Hi,
what about using the data-defined option near the "Exclude items from export" in the items properties --> Rendering (with a case when >expression)?
http://docs.qgis.org/2.14/en/docs/user_manual/print_composer/composer_items/composer_items_options.html#rendering-mode

HTH,
Harrissou

2016-10-26 22:10 GMT+02:00 Bernd Vogelgesang <bernd.vogelges...@gmx.de>:
Hi,
I set up a neat atlas for displaying a row of 50 sample plots. On a second page, I want to show 2 pictures taken of these plots >>automatically with an expression including the path || @atlas_pagenumber || '_1.jpeg' or '_2.jpeg' to display up to two photos >>named e.g. 1_1.jpeg, 1_2.jpeg.

This works really great! The problem is, that for some plots, we do not and have any picture or only one. In composer, these >>missing images are marked with a big red cross. Unfortunately, these red crosses are also exported, which looks quite shitty.

Is there any clever way of forcing QGIS not to export these place holders but just not to print anything at this place?

The only (boring) idea I came up with till now, was to create empty white images and name them accordingly to avoid the red >>crosses.

Thanx
Bernd

--Bernd Vogelgesang
Siedlerstra├če 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374
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--
Bernd Vogelgesang
Siedlerstra├če 2
91083 Baiersdorf/Igelsdorf
Tel: 09133-825374
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