Re: [Qgis-user] Shapefiles with all numeric attribute names don't classify right?

2016-05-10 Thread Philip Pierdomenico
Agreed, don't start field names with numbers.

(from ESRI, but I think should apply equally to shapefiles used in QGIS):
http://support.esri.com/cn/knowledgebase/techarticles/detail/23087


Phil


On Tue, May 10, 2016 at 1:55 PM, Anita Graser  wrote:

> ​Hi Ian,
> If I remember correctly, Shapefile attribute names must not start with a
> number. Im not sure why this is but I think that could be part of the issue.
> Best wishes,
> Anita​
>
> On Tue, May 10, 2016 at 3:26 PM, Ian Turton  wrote:
>
>> I have a shapefile with a bunch of attributes called 1980,1990,2000, etc
>> to represent the years the data is for. They are integers (if that matters)
>> but when I try to use them in a Qgis (2.14.2-Essen) the styler recognises
>> them as numeric but when I try to produce a graduated style all the classes
>> are  set to -2147483648 - -2147483648. If I rename the attribute to
>> 1980_inc or inc1980 the classifier is happy and everything works as I
>> expect.
>>
>> Does anyone know what might be going on?
>>
>> Ian
>>
>> --
>> Ian Turton
>>
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>
>
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Re: [Qgis-user] Shapefiles with all numeric attribute names don't classify right?

2016-05-10 Thread Anita Graser
​Hi Ian,
If I remember correctly, Shapefile attribute names must not start with a
number. Im not sure why this is but I think that could be part of the issue.
Best wishes,
Anita​

On Tue, May 10, 2016 at 3:26 PM, Ian Turton  wrote:

> I have a shapefile with a bunch of attributes called 1980,1990,2000, etc
> to represent the years the data is for. They are integers (if that matters)
> but when I try to use them in a Qgis (2.14.2-Essen) the styler recognises
> them as numeric but when I try to produce a graduated style all the classes
> are  set to -2147483648 - -2147483648. If I rename the attribute to
> 1980_inc or inc1980 the classifier is happy and everything works as I
> expect.
>
> Does anyone know what might be going on?
>
> Ian
>
> --
> Ian Turton
>
> ___
> Qgis-user mailing list
> Qgis-user@lists.osgeo.org
> List info: http://lists.osgeo.org/mailman/listinfo/qgis-user
> Unsubscribe: http://lists.osgeo.org/mailman/listinfo/qgis-user
>
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[Qgis-user] Shapefiles with all numeric attribute names don't classify right?

2016-05-10 Thread Ian Turton
I have a shapefile with a bunch of attributes called 1980,1990,2000, etc to
represent the years the data is for. They are integers (if that matters)
but when I try to use them in a Qgis (2.14.2-Essen) the styler recognises
them as numeric but when I try to produce a graduated style all the classes
are  set to -2147483648 - -2147483648. If I rename the attribute to
1980_inc or inc1980 the classifier is happy and everything works as I
expect.

Does anyone know what might be going on?

Ian

-- 
Ian Turton
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