[Qgis-user] Example of triangular legend

boxerg at iinet.net.au boxerg at iinet.net.au
Sun Jun 16 16:36:24 PDT 2024 

See attached image.

Any thoughts on how we might do this in QGIS?

Grant
Perth Western Australia

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Today's Topics:

   1. Triangular Legend (Drew French)
   2. Re: Triangular Legend (Phil Wyatt)


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Message: 1
Date: Sat, 15 Jun 2024 16:51:57 -0500
From: Drew French <fullboarfarm at gmail.com>
To: QGIS List <qgis-user at lists.osgeo.org>
Subject: [Qgis-user] Triangular Legend
Message-ID:
	<CAA0tCbAuVg=PCV02W+7HFpbjkXyeSozKP=sH4J8gj=OTmdgMSA at mail.gmail.com>
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Do you have a sample image?

On Sat, Jun 15, 2024 at 2:00?PM <qgis-user-request at lists.osgeo.org> wrote:

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> Message: 1
> Date: Sat, 15 Jun 2024 14:26:06 +0800
> From: <boxerg at iinet.net.au>
> To: <qgis-user at lists.osgeo.org>
> Subject: [Qgis-user] Triangular Legend
> Message-ID: <00b001dabeec$e80ff490$b82fddb0$@iinet.net.au>
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> I am producing ternary radiometric images where potassium is shown in 
> red, thorium shown in green and uranium shown in blue. In geophysical 
> maps, they commonly have a triangular legend with potassium at the 
> apex and the green and blue at the lower points of the triangle. Hs 
> anyone ever created a triangular legend for an RGB image?
>
> Cheers Grant
>
> Perth Western Australia
>
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--
Andrew French
(715) 986-8088
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Message: 2
Date: Sun, 16 Jun 2024 18:00:10 +1000
From: "Phil Wyatt" <phil at wyatt-family.com>
To: "'Drew French'" <fullboarfarm at gmail.com>, "'QGIS List'"
	<qgis-user at lists.osgeo.org>
Subject: Re: [Qgis-user] Triangular Legend
Message-ID: <001301dabfc3$3c7290c0$b557b240$@wyatt-family.com>
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I suspect this is typical of what is required (maybe not with the text?)

 

https://vro.agriculture.vic.gov.au/dpi/vro/vroimages.nsf/Images/landform_rad
io5/$File/radio_pyrmid.jpg

 

 

 

From: QGIS-User <qgis-user-bounces at lists.osgeo.org> On Behalf Of Drew French
via QGIS-User
Sent: Sunday, June 16, 2024 7:52 AM
To: QGIS List <qgis-user at lists.osgeo.org>
Subject: [Qgis-user] Triangular Legend

 

Do you have a sample image?

 

On Sat, Jun 15, 2024 at 2:00?PM <qgis-user-request at lists.osgeo.org
<mailto:qgis-user-request at lists.osgeo.org> > wrote:

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Today's Topics:

   1. Triangular Legend (boxerg at iinet.net.au <mailto:boxerg at iinet.net.au> )


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Message: 1
Date: Sat, 15 Jun 2024 14:26:06 +0800
From: <boxerg at iinet.net.au <mailto:boxerg at iinet.net.au> >
To: <qgis-user at lists.osgeo.org <mailto:qgis-user at lists.osgeo.org> >
Subject: [Qgis-user] Triangular Legend
Message-ID: <00b001dabeec$e80ff490$b82fddb0$@iinet.net.au
<http://iinet.net.au> >
Content-Type: text/plain; charset="us-ascii"

I am producing ternary radiometric images where potassium is shown in red,
thorium shown in green and uranium shown in blue. In geophysical maps, they
commonly have a triangular legend with potassium at the apex and the green
and blue at the lower points of the triangle. Hs anyone ever created a
triangular legend for an RGB image?

Cheers Grant

Perth Western Australia

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-- 

Andrew French

(715) 986-8088

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