[Qgis-developer] Symbolizing a discrete or a boolean raster

Thu Feb 2 07:47:15 PST 2017

Dear all

we have now managed to set up a concrete offer for this feature and are now
looking for funding. The costs are 4000€ and we have gathered 2000-2500€ so
far.

Is there anyone on this list who also craves for this feature and would
like to financially support it? I can provide any additional info offline.

Also, given the relatively low costs, I'd prefer to avoid a full-fledge
crowdsourcing campaign. Too much overhead.

Thanks a lot and all the best

Stéphane

Le jeudi 12 janvier 2017, Stéphane Henriod <stephanebek at gmail.com> a écrit :

> Hi all
>
> upon advice from Andreas, I started a formal description of the
> requirements for such a feature:
>
> https://docs.google.com/document/d/1cDemM2m88_mbs65sYzfBbVdHI_ObOjf_
> i35ne3OKsRs/edit?usp=sharing
>
> Please, anyone interested, do check, comment, add, correct,... Once we
> have a "final" version, I will inquire a more precise financial estimation.
> Then let's see how we can move forward!
>
> Thanks and cheers
>
> Stéphane
>
>
> Le jeudi 12 janvier 2017, Stéphane Henriod <stephanebek at gmail.com
> <javascript:_e(%7B%7D,'cvml','stephanebek at gmail.com');>> a écrit :
>
>> Hi Alexandre
>>
>> (also posting on user-)
>>
>> I 100% agree with you and I would love to somehow give back to QGIS (I
>> did already, but at a small scale).
>>
>> I mostly wanted to know if I am the only one to wish for this feature.
>> Apparently not the case: many have expressed the same wish!
>>
>> Now funding: I would love to have a rough idea what "not very expensive"
>> means. If there are any dev around who could have the interest / skills to
>> implement this feature, can we somehow go concrete and work together on a
>> feature description and tentative budget? The situation is obviously very
>> different if we talk about 1.000 or 20.000€
>>
>> Cheers
>>
>> Stéphane
>>
>>
>> Le jeudi 12 janvier 2017, Alexandre Neto <senhor.neto at gmail.com> a
>> écrit :
>>
>>> Hello Stéphane,
>>>
>>> IMHO, since it seems that you are not able/willing to sponsor the
>>> feature yourself, sounds like a good opportunity for a small crowdfunding.
>>>
>>> That way you would be able to contribute back to QGIS by giving your
>>> time in finding a developer able to do it, setting up the crowdfunding,
>>> advertise it, pay for part of it and so on.
>>>
>>> It looks like a simple feature. it should not be very expensive (much
>>> less than an ArcGIS license for sure), and if you think many people need
>>> this, then the money will be easy to raise.
>>>
>>> Alexandre Neto
>>>
>>> Stéphane Henriod <stephanebek at gmail.com> escreveu no dia quarta,
>>> 11/01/2017 às 11:37:
>>>
>>>> One last message for today (sorry for spamming!)
>>>>
>>>> It seems that this feature would actually be wished by "many" people
>>>> (see the ticket and the talks on user-). I just gave a try to 2.99-nightly
>>>> and, as far as I can see, nothing has been done in this direction (yet?).
>>>>
>>>> I am wondering if there are massive challenges that I am overlooking or
>>>> if this could be implemented quite easily. In any case, do you think this
>>>> is a request that can be taken on to 3.0?
>>>>
>>>> Thanks a lot to all the devs here... I feel quite bad for asking for a
>>>> new feature while not having the competences to contribute a tiny bit to
>>>> its development but I really feel this is one of the few major missing
>>>> features in QGIS right now (and will be happy to help on the feature
>>>> requirements, the tests, etc.).
>>>>
>>>> All the best!
>>>>
>>>> Stéphane
>>>>
>>>>
>>>> Le mercredi 11 janvier 2017, Stéphane Henriod <stephanebek at gmail.com>
>>>> a écrit :
>>>>
>>>>> Hi again
>>>>>
>>>>> it seems that the requirements are related (although not 100% similar)
>>>>> to this other open (and assigned) ticket:
>>>>> http://hub.qgis.org/issues/14449
>>>>>
>>>>> I really hope to see this very needed feature in a coming version of
>>>>> QGIS and happy to help wherever I can!
>>>>>
>>>>> Cheers
>>>>>
>>>>> Stéphane
>>>>>
>>>>>
>>>>> Le mardi 10 janvier 2017, Stéphane Henriod <stephanebek at gmail.com> a
>>>>> écrit :
>>>>>
>>>>>> Hi
>>>>>>
>>>>>> let me move here a request that has been shortly discussed on the
>>>>>> user-mailing list:
>>>>>> http://lists.osgeo.org/pipermail/qgis-user/2017-January/038793.html
>>>>>> http://lists.osgeo.org/pipermail/qgis-user/2017-January/038795.html
>>>>>> http://lists.osgeo.org/pipermail/qgis-user/2017-January/038801.html
>>>>>>
>>>>>> and for which a ticket is open:
>>>>>> http://hub.qgis.org/issues/14845
>>>>>>
>>>>>> I was said that some work has been done in this direction for 3.0 but
>>>>>> I don't know if it completely covers the feature request
>>>>>>
>>>>>> ----------------------
>>>>>>
>>>>>> When styling a discrete or boolean raster, there seems to be no
>>>>>> direct method, only a few workarounds. The feature I dream of would do the
>>>>>> following:
>>>>>>
>>>>>>    - A new render type "Discrete raster"
>>>>>>    - One button allows to fetch all unique values form the raster
>>>>>>    (with a warning message if there are more than XXX unique values)
>>>>>>    - A color ramp is applied by default
>>>>>>    - I can multi-select values and apply them the same style and /
>>>>>>    or the same label
>>>>>>    - I can remove values. The pixels with those values will simply
>>>>>>    not be displayed
>>>>>>    - I can save my color map and load an existing color map
>>>>>>
>>>>>> So pretty much like the ArcGIS implementation:
>>>>>> http://resources.arcgis.com/en/help/main/10.1/index.html#/re
>>>>>> presenting_unique_categories_such_as_land_use/009t00000074000000/
>>>>>>
>>>>>> The current limitations I see (in 2.14):
>>>>>>
>>>>>>    - The discrete values must be entered manually, which is a pain
>>>>>>    for a raster with many unique values (or if I don't know in advance what
>>>>>>    all values are)
>>>>>>    - If I click on *Classify*, QGIS will choose X values (based on
>>>>>>    the number of classes and the classification method (continuous or equal
>>>>>>    interval)), which no longer match the "exact" values of my raster. It
>>>>>>    doesn't really make sense to classify a discrete rendering
>>>>>>    - Although it is currently possible to style discrete rasters,
>>>>>>    the procedure is not really intuitive for beginners
>>>>>>
>>>>>> ----------------------
>>>>>>
>>>>>> Is this a feature that is envisioned for 3.0? Is there anything I can
>>>>>> do to support it? (except coding it myself, since I don't have the skills
>>>>>> for that...)
>>>>>>
>>>>>> Thanks a lot in advance
>>>>>>
>>>>>> Cheers
>>>>>>
>>>>>> Stéphane
>>>>>>
>>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> “When you travel, remember that a foreign country is not designed to
>>>>> make you comfortable. It is designed to make its own people comfortable."
>>>>> -- Clifton Fadiman
>>>>>
>>>>>
>>>>
>>>> --
>>>>
>>>> “When you travel, remember that a foreign country is not designed to
>>>> make you comfortable. It is designed to make its own people comfortable."
>>>> -- Clifton Fadiman
>>>>
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>>>
>>> --
>>> Alexandre Neto
>>> ---------------------
>>> @AlexNetoGeo
>>> http://sigsemgrilhetas.wordpress.com
>>> http://gisunchained.wordpress.com
>>>
>>
>>
>> --
>>
>> “When you travel, remember that a foreign country is not designed to make
>> you comfortable. It is designed to make its own people comfortable." --
>> Clifton Fadiman
>>
>>
>
> --
>
> “When you travel, remember that a foreign country is not designed to make
> you comfortable. It is designed to make its own people comfortable." --
> Clifton Fadiman
>
>

-- 

“When you travel, remember that a foreign country is not designed to make
you comfortable. It is designed to make its own people comfortable." --
Clifton Fadiman
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