[Qgis-user] Symbology

[chris hermansen]

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 <ahyounger at iinet.net.au>
wrote:

> 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.
>
>

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

C'est ma façon de parler.
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