How to convert discrete data layers into continuous to be used in maxing

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mohamed sallam

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Apr 21, 2014, 8:28:20 AM4/21/14
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Hi guys
I'm working on some soil shape file layers in Arabian Peninsula and I need to convert them to continuous ASCII file layers to be used in maxent. Is anybody has an experience with that, it's urgent!!!
Thanks guys

Alaa Eldeen

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Apr 21, 2014, 3:55:46 PM4/21/14
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Dear Mohamed,

If I understand you right, you have a vector data and you want to convert it to ASCII layers , If so, you will the converted ASCII will be categorical data not continuous. By the way, Maxent is dealing well with Categorical data.

Cheers



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Husam El Alqamy

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Apr 22, 2014, 2:28:23 AM4/22/14
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Dear Mohamed
you should convert your shapefiles into raster first and then convert the rasters into ASCII. You have to make your mind about which attribute of the shapefile you will base your raster on. For instance if you are looking to include the soil pH in your maxent model then you have to produce a raster of that shape file with the pH field being assigned as the value. Also you need to specify the cell size, snapping raster and the processing extent in the environments values in arcmap as to match those of your other ASCII grids that you are using along in Maxent to avoid any error message specifying un matched extents in the predictor layers.
Regards
Husam El Alqamy
Sr. Biodiversity GIS Analyst
Environment Agency - Abu Dhabi
Husam El Alqamy, B.Sc., M.Phil.
Sr. Biodiversity GIS Analyst ,
Environmental Information Sector, EIS
Environmental Agency Abu Dhabi,UAE
Antelope Specialist Group, ASG - IUCN

Bezeng Simmy

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Apr 22, 2014, 2:31:17 AM4/22/14
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Dear Mohamed,

You could use this protocol everything is detailed within!!!


Regards
BEZENG BEZENG S
African Centre for DNA Barcoding,
Department of Botany & Plant Biotechnology,
University of Johannesburg P.O. BOX 524 
Auckland Park 2006 South Africa
Tell: +27 11 559 2495
Fax: +27 11 559 2411
Mobile:+27 82 544 6119
Email:2010...@student.uj.ac.za
Website: http://www.acdb.co.za.

A_Maxent_Model_v7_ArcGis protoccol.pdf

mohamed sallam

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Apr 23, 2014, 4:29:09 AM4/23/14
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Thank you all guys for your reply. I appreciate your very kind help. I will go back to you again to tell you what happened with me. Thanks again

mohamed sallam

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Apr 23, 2014, 4:31:53 AM4/23/14
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Thanks Alaa

mohamed sallam

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Apr 23, 2014, 4:32:16 AM4/23/14
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Thanks Husam very much

mohamed sallam

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Apr 23, 2014, 4:32:45 AM4/23/14
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Thanks Bezeng for the protocol
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