If your layer is a CSV file, do you not first need to convert it to a spatial form, for example a shapefile?
In case I misunderstand, if it came from a CSV file, then as Barend suggests, maybe the type of the column is incorrect. You can use a CSVT file to define column types prior to conversion; alternatively you can add a new column of type integer for example, and convert the string value to integer. On Fri, Jun 17, 2022 at 11:13 PM Allan Younger <[email protected]> wrote: > csv file > > ------ Original Message ------ > From "Kobben, Barend (UT-ITC)" <[email protected]> > To "chris hermansen" <[email protected]>; "Allan Younger" < > [email protected]> > Cc "QGIS User" <[email protected]> > 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" <[email protected] on behalf of > [email protected]> wrote: > > > > Allan and list, > > > > On Fri, Jun 17, 2022 at 7:00 PM Allan Younger via Qgis-user < > [email protected]> 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. > > -- Chris Hermansen · clhermansen "at" gmail "dot" com C'est ma façon de parler.
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