Latest Contributions by CarinaZacharias

‎07-15-2016

Yes, that is due to the underlying resistance values, which where input for the cost distance and based on suitability of habitat for pandas (they only cross where highly suitable habitat is close on both sides of the highway). Actually the weight for the highway is high, but it seems the corridor tool still concludes that they can cross at certain points ... I hope there is no mistake anywhere. 😕

‎07-15-2016

Thanks so much again for the detailed reply. I guess in theory pandas could cross a highway and my conclusion from the Corridor tool would be that they can do so at the area that is coloured in the uppermost picture, right?

‎07-15-2016

Hi thanks for the reply! I don't really mind the No Data actually as long as my assumptions from the first post above are correct. Do you happen to have any idea if that is the case?

‎07-15-2016

Jayanta Poddar maybe you can help?

‎07-14-2016

Hi Dan Patterson, sorry. Yes, I have seen this link. So, here are the two Cost Distance layers for my corridor. The first one is for the Northern habitat and the second one for the Southern habitat: And this is from the table of contents: Does that help? Cheers, Carina

‎07-14-2016

Hi, thanks very much for all these answers! In the end I used the Cell Statistics tool with the MAXIMUM option.

‎07-13-2016

Hello everyone, sorry, I feel like I'm flooding this forum with questions lately, but I am always getting such excellent help, which is great! My question now concerns the output of the Corridor tool (see picture below). It is created using two inputs of the Cost Distance tool for two different sources - in this case habitat for giant pandas North of Highway 303 and habitat South of the highway. Now I was wondering: 1.) Why do I get so many NoData cells? Is that because the cost there to connect the two sources would be too great? (but too great compared to what? The maximum dispersal limit that I specified when using Cost Distance?) --> I am actually quite happy that there is so much NoData, because IF it really means travel for pandas is too "costly" there, then I have the area for possible corridor establishment narrowed down pretty neatly. I just want to make sure I am not drawing incorrect conclusions. 2.) The higher the value of a cell the higher the cost for a panda to travel through this cell from one habitat to the next. Is that correct? Many thanks in advance! Carina

‎07-12-2016

Hi, for use of the "Map Comparison Kit" the raster maps that I want to compare need to have the same number of columns and rows and the same cell size. So, I have been using the Clip tool to clip the smaller one by the bigger one, also setting Environment (Processing Extent to the extent of the raster that I used to clip with and raster Analysis to the cell size of the raster I clip with). But there is no change. Same goes for Extract by Mask. Any ideas why it isn't working? Cheers!

‎07-12-2016

Perfect, thanks so much for your help!

‎07-11-2016

Thanks for your advice and the interesting link! I have made a screenshot of the extent of one of the layers: The numbers are indeed big and suggest a projected coordinate system although right underneath it says "Spatial reference: GCS_WGS_1984". I continue to be confused by this somehow ... What I did was: I used the Define Projection tool to define WGS 1984 and then I wanted to use the Project Raster tool to make it to UTM 48 because I intend to do some corridor modelling (for species movement) that involves distance calculation and I wanted the distance to be measured in meters. This procedure was adviced in this discussion: What projection should I use to measure in meters? But, if I understand correctly, it was wrong to define WGS 1984 as a reference system. So, I just have to find the right geographic coordinate system and then it should work?

‎07-11-2016

Exporting to a new file hasn't changed anything either, I am afraid.

‎07-11-2016

Sadly, I cannot reboot as I am at a university computer. But I now noticed when I open the layer in a new map it gives me this warning (below). Does this mean something?

‎07-11-2016

Thanks. Yes, I have tried closing and reopening and I've tried again now, but that doesn't help unfortunately. They have a defined coordinate reference system - I am only redefining and reprojecting it to solve another problem actually.

‎07-11-2016

Hi, I have a problem that does not seem to be answered by any previous forum entry or ESRI support pages. I simply tried to use the Project Raster tool to reproject a raster layer. It has worked before (with a different layer), but now I get this error: In the description it says: "The spatial reference of the dataset cannot be altered. The dataset may be in use by another application and therefore locked." But I don't really know what to make of this. Please, can anybody help? Thanks very much!

‎07-11-2016

Anyone any ideas why the Project Raster tool should stop working? It worked all right for the rest I did, but I have to reproject a few layers now. And it won't do it anymore. Instead I get this error:

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Date Last Visited	‎11-11-2020 02:24 AM

My Ideas

Latest Contributions by CarinaZacharias

Re: How to interpret the results of the Corridor tool

Re: How to interpret the results of the Corridor tool

Re: How to interpret the results of the Corridor tool

Re: How to interpret the results of the Corridor tool

Re: How to interpret the results of the Corridor tool

Re: Reclassify certain parts of a raster layer for use of Cost Distance

How to interpret the results of the Corridor tool

Make rasters have the same number of columns and rows

Re: Project Raster: Error 000289 Failed to alter spatial reference

Re: Project Raster: Error 000289 Failed to alter spatial reference

Re: Project Raster: Error 000289 Failed to alter spatial reference

Re: Project Raster: Error 000289 Failed to alter spatial reference

Re: Project Raster: Error 000289 Failed to alter spatial reference

Project Raster: Error 000289 Failed to alter spatial reference

Re: What projection should I use to measure in meters?

Make rasters have the same number of columns and r...