[Qgis-user] graduated symbols for point layers

[David Fawcett]

I can confirm that this is a problem in 1.8.0-Trunk.

Graduated symbols used to 'just work', now they don't.  If they do
somehow still work, it is very unintuitive.  I recently tried to show
off some data using QGIS in a workshop that I was teaching.  I had
upgraded QGIS to show off the latest look and features.  It was
embarrassing when I couldn't do something simple like make graduated
size symbols...

Here is the version that I am using (on Win32)


QGIS version
1.8.0-Trunk
QGIS code revision
33b7e31
Compiled against Qt
4.7.1
Running against Qt
4.7.1
GDAL/OGR Version
1.8.1
GEOS Version
3.2.2
PostgreSQL Client Version
8.3.10
SpatiaLite Version
2.4.0
QWT Version
5.2.1
This copy of QGIS writes debugging output.


David.

On Mon, Nov 14, 2011 at 10:06 AM, Caroline Rendon
<caroline.t.rendon at gmail.com> wrote:
> Hi Sake,
>
> This doesn't work for me. The symbols still appear in graduated colors, all
> the same size - and the size doesn't seem to change when I change the
> number, although it does between millimeters and map units. I'm sure there's
> just something I'm missing (I'm new to QGIS) but I can't figure it out.
> Thanks for your help!
>
> Caroline
>
> On Sat, Nov 12, 2011 at 3:08 AM, Sake Wagenaar <sw1234 at planet.nl> wrote:
>>
>> Hi Caroline,
>>
>> If you use new symbology, the option to scale point symbols is hidden
>> under the button 'Advanced'. With 'Size scale field' you can select a field.
>> Next you have to change 'Size', to give the symbols the size you want. If
>> the values are large, and you use millimeters, the symbols get much too
>> large, even if you use the smallest possible value for Size (0,01).  A
>> better option is to use map units.
>>
>> Sake Wagenaar
>>
>> Op 11-11-2011 23:08, Caroline Rendon schreef:
>>
>> Hi,
>> I'm trying to create graduated symbols for a point layer, and the only
>> option it will give me is by color, but I want graduated symbols by size. I
>> was only able to get the color to work with "old symbology" because in new
>> symbology the layer would just disappear altogether and I had to re-add it.
>> So in old symbology I can get dots of different colors but not different
>> sizes. Am I missing a plugin or something? I'm working in 1.7.1 on Win XP.
>> Thanks in advance for your help!!
>>
>> Caroline Rendon
>>
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