On 18-06-18 17:10, Jeroen Hovens wrote:
That would work if updating the xlsx file automatically leads to an updated
map. Does it, or do I have to renew the join every time the xlslx is updated?
Just (re)opening the project should work. You can easily test it locally.
I would like the decision makers to see directly what happens to the
geographical spread if they refuse proposal 10 to 21 (for instance based on
quality of the proposal). Because geographical spread is one of the criteria
and this is best visualized with a map (instead of a list of municipality
names), they can argue and reconsider choices. That's my need for 'real-time'.
Combined with the wish to make changes in just one document (xlsx being the
easiest) in stead of two (both xlsx and qgis), I am looking for solution.
To be honest, opening the attribute table and edit some cells manually
in an edit session is not too complicated imho.
I have to look into the Statistics panel. Will that provide cumulations of a
certain column based on a selection of fields (all the selected proposals)? And
what is used to create that selection? Does it refresh automatically?
Yes, you choose the layer and column and it shows all statistics. It can
also show the statistics for the selected features only.
-----Oorspronkelijk bericht-----
Van: Qgis-user <qgis-user-boun...@lists.osgeo.org> Namens Raymond Nijssen
Verzonden: maandag 18 juni 2018 13:35
Aan: qgis-user@lists.osgeo.org
Onderwerp: Re: [Qgis-user] Using qgis as realtime decision support tool
Hi Jeroen,
If I understand you correctly, you just want to color entire municipalities
based on information in one or few columns? And the challenge is cooperating
with others, who don't know QGIS?
You could use a shared drive, like dropbox, to store 3 files:
1 table (xlsx or csv)
1 geo layer with municipalities (gpkg or shp)
1 qgis project, with the table joined to the layer, and with the desired style
Others can update the table, and you (and others) can open the project and see
the updated map in qgis.
Would that work?
On 18-06-18 12:40, Alexandre Neto wrote:
I agree that one layer would be preferable. Using the categorized
renderer would make it easy to select and deselect proposals. You can
create the classes with a mix of the name of the munucipality and the
bugdet, that way that is visible directly on the legend, making it
easier to select.
Then you can use the Statistics panel to show the stats over a column,
for example the budget sum.
Jeroen Hovens <m...@groenebij.nl <mailto:m...@groenebij.nl>> escreveu
no dia segunda, 18/06/2018 às 11:27:
I have not organized the data yet, that will depend on the pro’s and
con’s of idea’s how to use it.____
__ __
For now, I am thinking along the following line:____
All municipalities as fields with attributes being whether or not
they have a proposal and specific information about the proposal
such as budget needed, type of project, etc.____
That would mean 1 layer with all the proposals. That way it seems
easier to show the entire map (all municipalities white, just
borders, and all municipalities with proposal coloured), so to
easily see the spread.____
__ __
__ __
*Van:* Alexandre Neto <senhor.n...@gmail.com
<mailto:senhor.n...@gmail.com>>
*Verzonden:* maandag 18 juni 2018 12:03
*Aan:* Jeroen Hovens <m...@groenebij.nl <mailto:m...@groenebij.nl>>
*CC:* qgis-user@lists.osgeo.org <mailto:qgis-user@lists.osgeo.org>
*Onderwerp:* Re: [Qgis-user] Using qgis as realtime decision support
tool____
__ __
Hi,____
It's not clear how your data is organized, making it dificult to
help in such a specific request. All the porposals are in the same
layer, or in diferent layers?____
__ __
Still, if you put all the proposal layers in mutually exclusive
group, it will be easy to swap between proposals.____
__ __
If they are all in the same layer, you can categorize and in the
legend you can select which proposal to show.____
__ __
https://docs.qgis.org/testing/en/docs/user_manual/introduction/general
_tools.html?highlight=mutually#interact-with-groups-and-layers____
__ __
You can also create an atlas with the necessary visualizations for
each proposal and the calculus of the values you wish to show. But
again, it all depends on how you have you data organized.____
__ __
__ __
Jeroen Hovens <m...@groenebij.nl <mailto:m...@groenebij.nl>>
escreveu no dia segunda, 18/06/2018 às 10:19:____
Hello,____
____
I am thinking about using qgis as a real-time decision support
tool and I am looking for some good ideas to ease the
process.____
____
The case is the following:____
I have proposals from 60 municipalities (out of a possible few
hundred), each has 1 proposal. There is only room for 20
proposals to be accepted. One of the criteria will be the
geographical spread of the proposals: it is preferred to have 20
proposals sort of evenly spread over the entire country, instead
of having the majority of them coming from one region.____
____
My idea is to show these proposals on a map by colouring the
municipalities. As a decision support tool I need the ability to
adjust the selection in real-time (during the discussion). The
easy way is to just edit the attribute table or to select or
deselect specific municipalities. This however requires myself
to be present and make changes in qgis as the discussion goes
(given that nobody else in the decision group knows how to work
with qgis).____
An alternative is to produce a webmap and have each municipality
with a proposal have it’s own specific attribute value (but all
using the same colour in categorized style), so they all show up
in the map-legend, and any group member can easily select or
deselect a specific municipality from the legend.____
____
Do you have other ideas how to use a map as a real-time decision
support tool?____
____
Quality of the proposal is the main criterium, but in addition
to the geographical spread there are others as well, such as
variety in projects and the cumulative budget for the selected
proposals (the cumulative budget is capped). Since I am not well
known with database and calculation options in qgis and how to
automatically show the results, I am building an easy to use
excel file that will show all this information using precoded
calculations, much like a dashboard. Simply selecting and
deselecting proposals in an excel interface show you the changes
in variety of projects and cumulative budget. This is much
easier for the decision team to do themselves, since MS Excel is
a well known environment. ____
Ideally I get the two connected somehow, so selecting and
deselecting proposals will alter the results in both the map as
in the excel dashboard. However, altering data in excel doesn’t
automatically change the results in a qgis map, because they are
not connected in real-time.____
____
Do you have any ideas how to make a real-time connection between
MS Excel and a qgis map? Or information on how to use qgis
internal capabilities to calculate certain values based on the
selection of proposals? However, the last option will probably
still need myself to be present to somehow select or deselect
the proposals in qgis.____
____
Greetings,____
Jeroen____
____
____
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---------------------____
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