[Qgis-user] Distinct Colors for American Map

[Sasa Sullivan]

Thank you you Lee, there are some very interesting and useful maps on both
sites and I like the simple interactive map of the census data, something
like that would be great for the genealogy application I am attempting as I
would like to have others interact with me in viewing and uploading their
own data. I would like to do something like that (much later) and did not
see that QGIS had interactive web applications as part of its program.

I went to an Esri conference recently and they were promoting web based
applications for mapping, this is one reason I decided to go back to QGIS
even though I did not find any information on it for doing so. Overall I am
very pleased with the 2.0 and the community of people willing to help.
Again my thanks, I am going back to my tutorials:)

Best Regards,

Sasa


On Tue, Nov 26, 2013 at 2:15 PM, Lee Hachadoorian <
Lee.Hachadoorian+L at gmail.com> wrote:

>
> On 11/16/2013 03:43 PM, Dan Dittmann wrote:
>
>>
>> On Nov 15, 2013, at 7:09 PM, Sasa Sullivan wrote:
>>
>>  I am learning QGIS and know the general instructions on how to color
>>> code areas through the Style feature but am not able to get a distinct
>>> color per state for a map of the USA, maybe it is my source as I don't see
>>> one listed that encompasses the state shape only.
>>> Also I only need the state, city and county boundaries, if someone has a
>>> scaled down Open Source shape files for the USA it would be helpful as I
>>> don't have unlimited hard drive space for the ones I have found
>>>
>>> Sasa
>>> _______________________________________________
>>>
>>
>>
>> Hello Sasa,
>>
>> Without knowing where your data was obtained, I cannot speculate on the
>> trouble encountered. The instructions below assume QGIS 2.01 is used and
>> should be usable with adjustments on older versions as well.
>>
>> First lets get some data. The National Atlas website has numerous shape
>> files available for download. Most of what you are looking for should be
>> available fromhttp://nationalatlas.gov/atlasftp.html?openChapters=%
>> 2Cchpbound#chpbound.
>>
>> In this demo, I will be using the State Boundaries, One Million-Scale
>> layer available for download at http://dds.cr.usgs.gov/pub/
>> data/nationalatlas/statep010_nt00798.tar.gz.
>>
>> - Extract the archive and import the file statep010.shp into QGIS.
>> - Open the Properties dialog for the imported layer.
>> - Click Style from the column on the left.
>> - Locate the menu "Single Symbol" and change that to "Categorized".
>> - Change the Column menu to "State" Click the Classify button.
>> - Click OK.
>>
>> You now have a basic US Map with each state colored with a unique color.
>>
>> Dan
>>
>
> Sasa,
>
> The Census provides generalized shapes at http://www.census.gov/geo/
> maps-data/data/tiger-cart-boundary.html, in addition to the
> high-precision TIGER/Line files.
>
> I would also look at Natural Earth which is a dataset designed for
> cartography at different scales. Their "Admin 1 - States Provinces" dataset
> will include the US and other countries' subnational units. Their data also
> includes various "mapcolorX" columns so that you can use a categorical
> theme as described by Dan to style your map with X colors, with no states
> touching another state styled with the same color.
>
> Best,
> --Lee
>
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