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From: Nicholas Bawden on 10 Jul 2010 13:55
I have a datum point for 10 different stations with their respective lat/long. I am trying to create a contour map based on the different values for each location. For some reason MatLab wants to use my values as if they are a change in the z-axis when I use contour,interp2, meshgrid.... All the points I have represent surface ocean values and I want to create contour lines showing the changes in values over a set grid.

Latitude Longitude Values
30.04705 -88.070933 28.4
30.04708 -88.062917 27.9
29.98222 -88.062967 28.1
29.98237 -88.071367 28.3
29.92445 -88.070800 29.7
29.92450 -88.062617 28.4
29.72518 -87.987700 27.6
29.72532 -87.996200 25.2
29.72553 -88.028433 26.5
29.92428 -88.112700 26.9

Any help to go about this would be greatly appreciated, thanks in advance.
From: us on 10 Jul 2010 14:34
"Nicholas Bawden" <n_bawds41(a)yahoo.com> wrote in message <i1ac5s$qfg$1(a)fred.mathworks.com>...
> I have a datum point for 10 different stations with their respective lat/long. I am trying to create a contour map based on the different values for each location. For some reason MatLab wants to use my values as if they are a change in the z-axis when I use contour,interp2, meshgrid.... All the points I have represent surface ocean values and I want to create contour lines showing the changes in values over a set grid.
>
> Latitude Longitude Values
> 30.04705 -88.070933 28.4
> 30.04708 -88.062917 27.9
> 29.98222 -88.062967 28.1
> 29.98237 -88.071367 28.3
> 29.92445 -88.070800 29.7
> 29.92450 -88.062617 28.4
> 29.72518 -87.987700 27.6
> 29.72532 -87.996200 25.2
> 29.72553 -88.028433 26.5
> 29.92428 -88.112700 26.9
>
> Any help to go about this would be greatly appreciated, thanks in advance.

a hint:
- if(f) you own the mapping tbx...

help contourm; % <- and siblings...

us
From: Nicholas Bawden on 10 Jul 2010 15:23
How about if I don't have the mapping toolbox?
From: TideMan on 10 Jul 2010 17:50
On Jul 11, 7:23 am, "Nicholas Bawden" <n_bawd...(a)yahoo.com> wrote:
> How about if I don't have the mapping toolbox?

Google m_map
From: us on 10 Jul 2010 18:07
TideMan <mulgor(a)gmail.com> wrote in message <7b9dcd78-7ded-4b3a-a62a-87a73656f174(a)e29g2000prn.googlegroups.com>...
> On Jul 11, 7:23 am, "Nicholas Bawden" <n_bawd...(a)yahoo.com> wrote:
> > How about if I don't have the mapping toolbox?
>
> Google m_map

great hint, tm...

us
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