Latest Contributions by DeanMorgan

Hi Steve, These are cumulative rainfall from tropical cyclone events, so it makes the task of linking elevation to precipitation a little more difficult, factoring in rain bands, eyewall etc. But for my study, I am concentrating more on the interpolation methods and just wondered why a coarser resolution DEM (10km over 1km) might yield a slightly lower RMSE. Any thoughts? Thanks ... View more

Eric, prolific answers as usual, thank you! ... View more

Thank you again Eric...Worked great for MAE distribution ... View more

Thanks Eric, more like this right? [ATTACH=CONFIG]16784[/ATTACH] I imagine it will take me an awful long time to repeat 100 times, is there a way to speed this process up? Also, by absolute, just ignore the negative integers right. Thanks! ... View more

Hi Eric, A saviour once again. Should I be getting something like this? [ATTACH=CONFIG]16778[/ATTACH] Take the average of those values in the 'error' column (the 5 originally omitted), repeat a 100 times say, to give a distribution of MAE? Thanks again! ... View more

Bingo! Thank you Eric! ... View more

This is want I want to achieve [ATTACH=CONFIG]16689[/ATTACH] But, this is via data frame clipping, and I now assume that due to the intricacy of the polygon shape, ArcMap simply fails to operate, essentially crashing. ... View more

Wow, literally took 20 minutes to open ArcMap again with this clipped data frame, as opposed to 5 seconds before. Is there something I am missing, this is certainly not the intended or desired performance of this tool I know. Any help hugely appreciated at this time.... ...The program finally unfroze, changed to no clipping, and everything runs smoothly again. Not a tool I will use again in a hurry! But I still need a kriged surface limited to land areas of my polygon. I previously tried the raster option as you stated Steve, but my classes (in this case, precipitation) were vastly altered.... How can I retain the classes when exporting to raster?? The kriged surface prior to export is fantastic, as are the true values of the rainfall data, I just want to limit the display of this surface to the outline of my polygon, with no preference to how I get to there! Is there anyway I could invert the colours of my polygon. Perhaps having the areas around the land coloured white to isolate the kriged surface?? [ATTACH=CONFIG]16687[/ATTACH] This is what I want to achieve [ATTACH=CONFIG]16688[/ATTACH], but this was using the data frame cliping, and ArcMap simply fails to operate, probably due to the intricacy of the polygon used to clip ... View more

Steve, Thank you very much. Via the Data Frame Properties I supplied the country outline as the mask, or shape to clip to. It gave exactly the coverage I wanted. BUT, having applied this, ArcMap 10 became inoperable, in that it became unbelievably sluggish, and so had to force close. This happened each time I tried. My system was flying through other programs which were open, suggesting it is more than capable of operating. Does this task require large amounts of memory and processing?? ..............just tried from scratch assuming I had too many layers in the TOC. Just with one kriged layer the program literally becomes unresponsive! How can this be so?? The worst part is, I saved my workspace with all my previous work on, with this clipped data frame, now I cannot even access it! Everytime I click anywhere on the screen the program becomes unresponsive! ... View more

Anyone?? There must be a way around this problem, for what seems to be so fundamental. Any help would be greatly appreciated.... ... View more

Could anyone please suggest how to retain the resolution of a raster when using the Extraction by Mask tool??? Thanks! ... View more