SWD format

[lucho]

Hi everybody,
I'm working on the distribution of mammals in Guyana for a placement
and I would like use MaxEnt for this. With Argis (9.1) I've exported
my inventories data (species, lat, long) in "Sample". Additionally,
I've some shapes with precious informations, like vegetation,
altitude, etc (one shape for each info). I've tried to browse this
shapes (or just one of this shape) and to run MaxEnt but it seems that
I've a problem... When I want to run MaxEnt, a message inform me that
"samples need to be in SWD format when background data is in SWD
format".
I'm sorry to ask this type of question but I'm novice... (in english
to...) I've tried to convert my shapes with my informations to ascii
and I have obtained a .TXT et a.ini, but Maxent don't recognize this
two folders...
Is it possible to convert shapefile to csv by opening just the .dbf of
a shape with excell, then to save as .csv? By this way, is Maxent able
to produce a picture of the distribution of my species?

Thanks for your help, if somebody have understood...

[eric jepsen]

Hi Lucho,

In arcgis, the convert to asci tool automatically gives the .txt ending, but all you need to do is change that ending to .asc and you are good to go. At least, that has been my experience. Also, I notice you are discussing shapefiles. You may need to change and organize those into raster grids first, before converting to .asc files. And also make sure that the cell size and the corners all match up.

I hope this helps.

cheers,

-eric

Eric Jepsen
eric_...@yahoo.com


--- On Mon, 4/6/09, lucho <luccl...@hotmail.fr> wrote:

[lucho]

Hi eric, and thanks for your answer...
I've tryed to do what you explain me and so a new problem occurs...
I've changed .txt to asc, so Maxent recognize this one but when I run
the model,a message of error tells "error reading file C\...
\rastert_feature1.asc : java.lang.NumberFormatException : For input
string -54,605407...

Thanks for help!

On 6 avr, 19:28, eric jepsen <eric_jep...@yahoo.com> wrote:
> Hi Lucho,
>
> In arcgis, the convert to asci tool automatically gives the .txt ending, but all you need to do is change that ending to .asc and you are good to go.  At least, that has been my experience.  Also, I notice you are discussing shapefiles.  You may need to change and organize those into raster grids first, before converting to .asc files.  And also make sure that the cell size and the corners all match up.
>
> I hope this helps.
>
> cheers,
>
> -eric
>
> Eric Jepsen

> eric_jep...@yahoo.com
>
> --- On Mon, 4/6/09, lucho <lucclem...@hotmail.fr> wrote:

> > Thanks for your help, if somebody have understood...- Masquer le texte des messages précédents -
>
> - Afficher le texte des messages précédents -

[Hank]

Hi Eric
saw this question now, I am a novice and have the same problem, could you find a work around for it?

Cheers

Hank

[Francois Richard Smith]

Hi Eric and Hank,

I've used the SWD routine to analyse the distribution of a sea grass in estuaries along the south east coast of Africa. When using SWD you are using vector rather than raster data. Read the tutorial and you'll find it quite easy to convert from raster to vector. Hope this helps!

Francois

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