Help with mapping content

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Help with mapping content

Dean Roberts

Hi,

I was wondering if any knows how to do ‘clustering’ or ‘spidering’ of multiple instances on 1 geo coordinate. Simply laying 1 instance on top of another only hides items and placing next or overlapping is a mess.

Thanks for any help.

 

Best,

 

Dean Roberts

Volunteer Coordinator

 

Environmental Investigation Agency, 62-63 Upper Street, London N1 0NY

Email: [hidden email]

Tel: 020 7354 7960

eia-international.org 

 

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Re: Help with mapping content

Philip Barlow
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Hi Dean,

 

I assume that this is just a visual thing and you don’t want to alter your dataset in anyway?

 

There are a couple of styling options available – point displacement and point cluster.

 

 

Hope that helps?

 

Phil

 

 

 

 

From: qgis-uk-user [mailto:[hidden email]] On Behalf Of Dean Roberts
Sent: 18 September 2018 11:45
To: [hidden email]
Subject: [QGIS-uk-user] Help with mapping content

 

Hi,

I was wondering if any knows how to do ‘clustering’ or ‘spidering’ of multiple instances on 1 geo coordinate. Simply laying 1 instance on top of another only hides items and placing next or overlapping is a mess.

Thanks for any help.

 

Best,

 

Dean Roberts

Volunteer Coordinator

 

Environmental Investigation Agency, 62-63 Upper Street, London N1 0NY

Email: [hidden email]

Tel: 020 7354 7960

eia-international.org 

 

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Re: Help with mapping content

McDonaldR
In reply to this post by Dean Roberts
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Hi Dean

 

When you say “spidering” do you mean connecting points with lines (aka hub lines) like spokes on a wheel?  What have you tried?

 

For line features, i.e. the links, you can tell QGIS to merge features to remove duplicate labels.

For point features you could use rule based labelling to only show labels on certain features or the geometry generator and aggregate functions to create a layer used exclusively for labelling.

You might also be able to scale the feature on the number of aggregated features – more points in the same location = bigger feature.

The point displacement function might help too but I find that adds clutter at small scales and needs to be used with care.

 

How is your data structured?

 

StartID, StartX, StartY, EndID, EndX, EndY

A, 300000, 400000, W, 320000, 420000

A, 300000, 400000, V, 330000, 430000

 

Ross

 

 

From: qgis-uk-user [mailto:[hidden email]] On Behalf Of Dean Roberts
Sent: 18 September 2018 11:45
To: [hidden email]
Subject: [QGIS-uk-user] Help with mapping content

 

Hi,

I was wondering if any knows how to do ‘clustering’ or ‘spidering’ of multiple instances on 1 geo coordinate. Simply laying 1 instance on top of another only hides items and placing next or overlapping is a mess.

Thanks for any help.

 

Best,

 

Dean Roberts

Volunteer Coordinator

 

Environmental Investigation Agency, 62-63 Upper Street, London N1 0NY

Email: [hidden email]

Tel: 020 7354 7960

eia-international.org 

 

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