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| Author |
Re: Outlines of continents from ETOPO elevation da
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| Stéphane Bourgeois 2005-12-09, 7:26 pm |
| J Luis wrote:
>
>
> Stéphane Bourgeois wrote:
with[color=darkred]
> continents
> meters
years[color=darkred]
see[color=darkred]
> right
x[color=darkred]
>
> What about adding 100 m to the etopo matrix and drawing with the
> current sea-level?
That would do the same thing indeed, but it wouldn't cut on time to
do it :/
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| J Luis 2005-12-09, 7:26 pm |
| Stéphane Bourgeois wrote:
the[color=darkred]
>
> That would do the same thing indeed, but it wouldn't cut on time to
> do it :/
Yes, you are right. The idea was to draw the costlines over
the modified grid, but that obviously doesn't work because
the coastlines don't care about the Z value.
Some other options come to my mind.
- Subsample the ETOPO grid, compute the -100 m contour from it and
draw it over the full resolution image.
- Clip the grid bellow -100 with NaNs and overlay the continents as
filled patches. This will display clearly the the area between 0 and
-100 m
- Use a better program than Matlab to do this task. I recomend GMT
| |
| Stéphane Bourgeois 2005-12-09, 7:26 pm |
| J Luis wrote:
>
>
> Stéphane Bourgeois wrote:
>
with[color=darkred]
> the
time[color=darkred]
> to
>
> Yes, you are right. The idea was to draw the costlines over
> the modified grid, but that obviously doesn't work because
> the coastlines don't care about the Z value.
>
> Some other options come to my mind.
>
> - Subsample the ETOPO grid, compute the -100 m contour from it and
> draw it over the full resolution image.
>
> - Clip the grid bellow -100 with NaNs and overlay the continents as
> filled patches. This will display clearly the the area between 0
> and
> -100 m
>
> - Use a better program than Matlab to do this task. I recomend GMT
I think subsampling would be my only option, thanks.
I'll look into GMT though.
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