Mesh through curves and points

Hi,

I am new to grasshopper and I am trying to make a mesh through several points (see attachments). In this example i am connecting the mean house price of the 33 boroughs of London by a mesh. In this way i am hoping to create a landscape.

I have a problem. The points are working well for the boroughs but i have a problem with the zero level. I would like the closed curve around London and the two curves on both sides of the Thames to be zero. In this way I would have two landscapes on both sides of the Thames. This mesh prepared in Grasshopper will be taken into Rhino to be enhanced.

Is there a way to include the curves in my mesh together with my points in Grasshopper?

Any suggestions are much appreciated.

Thanks,

Wils

Attachments:

Screen 1.jpg, 1.4 MB
Screen 2.jpg, 1.5 MB

Replies to This Discussion

Permalink Reply by Hannes Löschke on December 17, 2012 at 1:59am

All you need to do is create additional points with 0 z coordiante values on your curves and feed them to your meshing. You can use any DivideXXX Compontent on your curves to get the points withthe neccessary precision.

on a side note: A merge for like 45 paths looks like a lot of copied parts and horribly inefficient to me. Could you post the full definition?

Permalink Reply by Wils on December 17, 2012 at 2:15am

Hi Hannes,

Thanks for your reply. I agree it seems very inefficient and looses the advantage Grasshopper may give. My tutor suggested this way. I have to set each point for each London Borough which is ok but to do this again for loads of zero points seems over the top. Also I have to do this exercise four times with other data for all London boroughs.

Many Thanks,

Wils

Permalink Reply by Wils on December 17, 2012 at 2:34am

Hannes,

I tried to attach the original files but didn't seem to like it. I'll try again one by one this time.

Thanks,

Wils

Permalink Reply by Wils on December 17, 2012 at 2:37am

Sorry my Rhino file is too large. If i just email you the Grasshopper file and the clean data is that enough?

Thanks,

Wils

Attachments:

Map London Boroughs.gh, 53 KB
Clean house prices.csv, 1 KB

Permalink Reply by Hannes Löschke on December 17, 2012 at 3:13am

Here's one as your tutor suggests. ...and one I'd go about it.

You tutor probably thought list and such things too hard for you to manage. If you find this true, you should just merge all the points you already set in your own definition directly into one list and use this as an imput to my version of things. ;)

Attachments:

MapLondonBoroughs_curves_without_merge.gh, 6 KB
MapLondonBoroughs_curves.gh, 46 KB

Permalink Reply by Wils on December 17, 2012 at 3:47am

Thanks! I meeting some friends at university today to help each other with grasshopper. I will let you know how we got on with your suggestions.

Many thanks,

Wils

Permalink Reply by Wils on December 17, 2012 at 8:35am

Hi Hannes,

The one you suggested worked very well (Screen 1). I can take the mesh into Rhino now and start playing with it. I will choose this much cleaner option.

I'm happy with the result but just wanted to share the other option you mentioned (close to the one my tutor suggested) on Screen 2. Somehow the mesh for the points and the mesh from the curves are separated. I'm just curious, do you know why?

Many thanks,

Wils

Attachments:

Screen 1.jpg, 1.7 MB
Screen 2.jpg, 1.5 MB

Permalink Reply by Hannes Löschke on December 17, 2012 at 10:02am

This is because the list created form the merge component and the one from the curves have differnet paths (the numbers in curly brackets on the top right in the panel)

List with incompatible paths stay separate lists, when connected to the same input. Each list will be used separately to find a mesh. Flatten (option on the input) will make sure, both lists are flattened into only one. I did that in the Screen1 version in the Delaunay component.

Permalink Reply by Wils on December 18, 2012 at 4:09am

It worked for both and will use both in my assignment.

Many many thanks,

Wils

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