[Qgis-user] Multiple Map Layout

[Alister Hood]

> Date: Mon, 5 Mar 2012 12:41:17 -0500
> From: Lee Hachadoorian <lee.hachadoorian at gmail.com>
> Subject: Re: [Qgis-user] Multiple Map Layout
> To: qgis-user at lists.osgeo.org
> Message-ID:
>	<CANnCtnJEVLwcEeTs2Opo4gjWXR-1m-KpY_GF-eKUA7_1zz6uCw at mail.gmail.com>
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>
> Not sure how this is supposed to work, but here is the behavior I observe.
>
> In Composer window:
>
> Add map item (A). Check "Lock layers for map item".
> Add map item (B). DO NOT check "Lock layers for map item".
> Change symbology in main QGIS window.
> Add map item (C).
>
> A and B display old symbology. C displays new symbology. But if you make more changes to the symbology, and want to update C, you have to hit Refresh view button. Now, *all* map items, whether or not "Lock layers for map item" is checked, change to new symbology. Similarly, if you change the layer extent in A or B, they update to display the new symbology.
>
> So it looks like if you add a map item, it will not update as long as you leave it alone and don't hit Refresh view.

It would also be updated when you print or export the composer layout, and maybe (I'm not sure) at other times, like reopening the project or the layout.  This behaviour is because in the "Item properties" under "Map" it is set to "cache".  Try "render" or "rectangle" for less confusing behaviour.

Regards,
Alister