[Qgis-user] Population statistics in QGIS

[Dietrich Heintz]

Hi Parv,
in QGIS you can extend the list of tools with the python plugin.
Go in the Menu Plugins/Manage and install Plugins.
A dialogue opens and you can search the web for available plugins for QGIS.
If you search for "buffer" you should find 4 relevant plugins. Depends 
on the repositories you have in your plugins-list.
You can extend this list in the settings menu.
The buffer tools are: Buffer by percentage, Multi Ring buffer, 
Multi-distance buffer, Wedge buffer processing algorithm.
If you install MMQGIS Toolbox you will find another tool that creates 
buffers.
hope this helps
Dieter

Am 22.05.2017 um 17:51 schrieb Parv Aggarwal:
>
> Hi QGIS Community,
>
> I’m Parv, an analytics intern at the Latino Community Credit Union 
> here in North Carolina. I’m tasked with finding and using GIS software 
> to visualize both US Census data and our membership data at micro 
> levels to determine best locations for expansions. As per my 
> instructions, this means being able to:
>
> -Visualize Latino population by smaller units than zip codes.  We have 
> worked with Census tracts in the past and that is ideal, but there are 
> even smaller areas with population data, like census blocks.  If we 
> can see in a map where the higher number of Latinos live and also see 
> the streets so that we can imagine potential locations and draw areas 
> around them, we could identify optimal locations.
>
> -If we get a proposal for a location, for example a realtor contacts 
> us and says “I have a great place for rent at 1309 Cúcuta Dr,” we 
> should be able to enter the address in the software and define an area 
> around it, draw that area and know how many Latinos live there. The 
> areas could be circles, free shape forms, circles cut by major 
> highways or barriers we would think people wouldn’t cross…
>
> -Of course we should be able to add our own data to the software, like 
> those addresses of our current members, and be able to look at, say, 
> total balances of members who live in a defined area.
>
> I have installed QGIS and am currently exploring its capabilities via 
> the user guide/training manual. I know I first have to do a join on 
> census csv population data and block shapefiles. Assuming I’m able to 
> do that, I am trying to find relevant sections that would show me how 
> to do this micro level aggregation of population data. I believe in 
> ArcGIS this is called “create buffers around a point” but I am not 
> sure if this is the relevant way to do it in QGIS or not. I searched 
> for buffers in the training manual but I still can’t tell if it means 
> the same thing or is relevant for my purposes. I’m also going through 
> the vector analysis and processing sections but end up getting lost on 
> what’s relevant and what’s not. I would greatly appreciate it if 
> someone could guide me on being more effective at looking at the 
> relevant features for the above needs, as I am unfortunately new to 
> using in-depth GIS softwares like this.
>
> Sincerely
>
> Parv
>
>
>
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