[Qgis-user] seeking help on QGIS symbology for clorepleth maps

[Neumann, Andreas]

Hi Kuan, 

There is a newer manual available (still under development), targetting
version 2.14. You can find it at http://docs.qgis.org/testing/en/docs/ 

For your specific problem - have a look at the "Size assistant":
http://docs.qgis.org/testing/en/docs/user_manual/working_with_vector/vector_properties.html#proportional-symbol-and-multivariate-analysis
 

When you complain about the poor state of documentation, there are
multiple ways of contributing: 

- help improving the documentation by providing pull requests 

- donate some money so others can work on documentation 

- hire a person that improves certain aspects of the documentation 

Please do not compare ArcGIS with QGIS documentation - because ArcGIS
documentation is created from a company with approx. 3200 employees and
annual revenues >1 billion US $ per year, whereas QGIS is run primarily
from part-time developers and volunteers - with available funds and
sponsored development in the lower 6 figure euros per year - distributed
over several companies and the global QGIS.ORG organization. 

Also - please understand that - unlike some other companies or projekcts
- QGIS is not copying ArcGIS - so it is quite natural that the terms are
different, as well as the UI 

Finally: QGIS is not a product. It is a project - and everybody is
welcome to improve and contribute. 

Hope this helps, 

Andreas 

On 2016-06-14 09:25, Kuan Song wrote:

> Dear community, 
> 
> I hope to seek help with QGIS functionality on symbology. The goal is to create simple maps with variable-sized symbols for a polygon map. For example: a map of counties, with bubbles on top indicating the population size in each county. This can be very easily with ArcMap, but is not very easy with QGIS. 
> 
> Yes I know it should be under the 'styles' tab, and it has something to do with adding a new symbol. But the part that's baffling with the user interface is: how do I link a symbol size to a data column in the data shapefile? 
> 
> Yes I know there is a QGIS manual. However, the current manual is very outdated. Many parts of it are simply copies of the manual from older versions, and are utterly useless. For example: http://docs.qgis.org/2.8/en/docs/training_manual/basic_map/symbology.html shows a different UI layout to the current software 2.14. 
> 
> This is a trivial and elementary problem. I feel ashamed asking this question. I'm sure many people have encountered it before. Could someone point me to a page where I can find a walk-through with actual screenshots of the current QGIS version? That'll be very helpful. 
> 
> Thank you. 
> 
> And again, to the QGIS developers: Please do not let poor documentation ruin a fine software product...... 
> 
> Yours 
> Kuan 
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