[Qgis-user] Symbology

[kirk]

If the data is being read as a character versus a integer or decimal, you cannot use graduated symbols. Double left click on the layer in the legend and select properties. Select the Fields tab and see what format the attributes are being read as.  I have run into this when generating a csv from a spreadsheet from  different language.  I would convert the format in excel or livre office and regenerate the csv file. Alternatively you can use  text editor to replace the quotes on each value in the existing csv.Kirk SchmidtSent from my Galaxy
-------- Original message --------From: Allan Younger via Qgis-user <qgis-user at lists.osgeo.org> Date: 2022-06-18  3:13 a.m.  (GMT-04:00) To: "Kobben, Barend (UT-ITC)" <b.j.kobben at utwente.nl>, chris hermansen <clhermansen at gmail.com> Cc: QGIS User <Qgis-user at lists.osgeo.org> Subject: Re: [Qgis-user] Symbology csv file

------ Original Message ------
From "Kobben, Barend (UT-ITC)" <b.j.kobben at utwente.nl>
To "chris hermansen" <clhermansen at gmail.com>; "Allan Younger" <ahyounger at iinet.net.au>
Cc "QGIS User" <Qgis-user at lists.osgeo.org>
Date 18/06/2022 12:32:07 PM
Subject Re: [Qgis-user] Symbology



Usually this happens if you have numbers (quantitatvie data) that are stored in your file/db as Strings (text)....
 


-- 
Barend Köbben


 
 


On 18/06/2022, 04:25, "Qgis-user on behalf of chris hermansen via Qgis-user" <qgis-user-bounces at lists.osgeo.org on behalf of
Qgis-user at lists.osgeo.org> wrote:



 



Allan and list,

 


On Fri, Jun 17, 2022 at 7:00 PM Allan Younger via Qgis-user <qgis-user at lists.osgeo.org> wrote:




Hi,


I'm trying to show assay results as simple dot plots as graduated colour and size scaled points based on a selected element.


Problem is that in the layer properties/symbology tab, I cannot select anything. 


Had the problem in Madeira 3.4 & assumed was just a glitch that had developed in that copy over time.


Installed 3.22.7, same problem.


Csv file has 162000 records & 30 column with co-ords for every point; with locations plotting a-ok.






At the top of the Layer Properties > Symbology dialogue window, have you selected one of the options other than "No Symbols"?  For example, "Graduated"?


 


Then in the field Value one of your layer's attributes?


 


Then pressed the "Classify" button?



-- 


Chris Hermansen · clhermansen "at" gmail "dot" com

C'est ma façon de parler.







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