Yes I agree the classify button is a little superfluous now.  It was a
bit of a oversight on my part. I think we could replace it with a
"Freeze Classification" button, or something like that.

Can you open a ticket and assign it to me on hub.qgis.org so I don't
forget about it.

- Nathan

On Thu, Aug 16, 2012 at 6:03 PM, Tammo Jan Dijkema <[email protected]> wrote:
> Hi Nathan,
>
> Thanks for your reply. We'll switch to manually editing the qml-file for now.
>
> However, I would say the feature could have been thought through a bit more. 
> The button 'classify' now seems superfluous, and there is no way to prevent 
> an update when changing layers. Perhaps the button 'classify' could be 
> replaced by an option to automatically reclassify. Another option would be to 
> add a classification scheme 'manual' which copies to the current 
> classification when selected, but retains its values when changing columns.
>
> I think there are many users (I know 3 of them in my company) that create 
> multiple maps with the same classification, so an update would be very 
> welcome :)
>
> Tammo Jan
>
> -----Oorspronkelijk bericht-----
> Van: Nathan Woodrow [mailto:[email protected]]
> Verzonden: donderdag 16 augustus 2012 9:49
> Aan: Tammo Jan Dijkema
> CC: [email protected]
> Onderwerp: Re: [Qgis-user] Symbology: switch off automatic classification
>
> Hey Tammo,
>
> This is a feature as having to click classify each time when changing the 
> values was confusing to users so I changed how it works a while ago.
>
> Currently there is no way to turn it off.  You could save out the qgis qml 
> file and hand edit it to have the new column.
>
> - Nathan
>
> On Thu, Aug 16, 2012 at 5:21 PM, Tammo Jan Dijkema <[email protected]> 
> wrote:
>> I'm using qgis 1.8 to create graduated maps of multiple data columns.
>> For this, I use the new symbology implementation, with graduated
>> colors. I would like to use one classification for all columns.
>> Usually based on Jenks, and tweaked manually.
>>
>>
>>
>> In qgis 1.8, when changing the column which is used for the
>> classification, the classification is recomputed automatically. This
>> is inconvenient, because now I have to enter the ranges for the
>> classification for each map I want to make. I expected the
>> classification to only be recomputed when I press the button 'Classify'.
>>
>>
>> The workaround I have found is to create my classification, then
>> switch to old symbology, which retains the classifcation when I change the 
>> column.
>>
>>
>> Is this a bug or a feature? And if it's a feature, how can I switch it offf?
>>
>>
>>
>> Thanks for your reply.
>>
>>
>> Tammo Jan Dijkema
>>
>>
>> _______________________________________________
>> Qgis-user mailing list
>> [email protected]
>> http://lists.osgeo.org/mailman/listinfo/qgis-user
>>
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