<div><font>Hi Lee,<br></font></div><div><font><br></font></div><div><font>If I understand the workings of print composer correctly, "lock layers for map item" does exactly that: Lock layers, NOT symbology. </font><font>The symbology of a locked layer can change. What the option does is to avoid that new layers are added to the map or that layers are turned off.<br>
</font></div><div><font><br></font></div><div><font>Therefore, if you want multiple map items on a page displaying on dataset in different styles, it seems necessary to duplicate the layer in the project file.<br></font></div>
<div><font><br></font></div><div><font>Best wishes,<br></font></div><div><font><br></font></div><div><font>Anita<br></font></div><div><font><br></font></div><br><div class="gmail_quote">On Mon, Mar 5, 2012 at 6:41 PM, Lee Hachadoorian <span dir="ltr"><<a href="mailto:lee.hachadoorian@gmail.com">lee.hachadoorian@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Not sure how this is supposed to work, but here is the behavior I observe.<br><br>In Composer window:<br><br>Add map item (A). Check "Lock layers for map item".<br>
Add map item (B). DO NOT check "Lock layers for map item".<br>
Change symbology in main QGIS window.<br>Add map item (C).<br><br>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.<br>
<br>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. But then if you're
unhappy with map item C, you have to delete it and add it in order to
avoid hitting Refresh view. Furthermore, I don't see any difference in
behavior between A and B. So what does "Lock layers for map item"
actually do?<br>
<br>Running 1.7.4 on Ubuntu 10.04.<br><br>Thanks,<br><font color="#888888">--Lee</font><br><br><div class="gmail_quote">On Mon, Mar 5, 2012 at 11:40 AM, G. Allegri <span dir="ltr"><<a href="mailto:giohappy@gmail.com" target="_blank">giohappy@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><span>You can insert as many maps as you need and lock the layers inside the map. </span><div>Set the symbology you need for one of your frames and the lock the layers.</div>
<div>Then change symbology for the other, and so on...<br>
<div>Look the "Lock layers for map item" inside the Map options of the left side frame: <a href="http://bit.ly/A8owm6" style="color:rgb(17,85,204)" target="_blank">http://bit.ly/A8owm6</a></div><div><br></div><div>
giovanni</div></div><br><div class="gmail_quote">2012/3/5 Lee Hachadoorian <span dir="ltr"><<a href="mailto:lee.hachadoorian@gmail.com" target="_blank">lee.hachadoorian@gmail.com</a>></span><br><blockquote class="gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div><div>
I've used QGIS to create a layout with a main map and an inset (e.g., Continental US with Alaska and Hawai'i as inset maps at different scales). But that's just two "viewports" onto the same underlying data. I wanted to make a layout where the same area would be displayed with two different symbolizations, side by side on the page for comparison. For those familiar with ArcGIS, I would normally accomplish this with two Data Frames.<br>
<br>Is there any way to do this with QGIS? Or do I have to create two QGIS projects, and combine the maps externally (presentation software, page layout software, etc.)?<br><br>Thanks,<br>--Lee<span><font color="#888888"><br clear="all">
<br>-- <br>Lee Hachadoorian<br>
PhD, Earth & Environmental Sciences (Geography)<br>Research Associate, CUNY Center for Urban Research<br><a href="http://freecity.commons.gc.cuny.edu/" target="_blank">http://freecity.commons.gc.cuny.edu/</a><br><br>
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</font></span></blockquote></div><span class="HOEnZb"><font color="#888888"><br><br clear="all"><br>-- <br>Lee Hachadoorian<br>PhD, Earth & Environmental Sciences (Geography)<br>Research Associate, CUNY Center for Urban Research<br>
<a href="http://freecity.commons.gc.cuny.edu/" target="_blank">http://freecity.commons.gc.cuny.edu/</a><br>
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