Svenne68

I don't think your problem is orthorectification for what you want to perform. Before you can do classification and change detection you need to do: Convert DN to radiance Convert radiance to reflectance Then you can do NDVI, Classification, change detection, comparison etc. between sensors and temporal resolutions

It uses Named USers accounts (You need a Online account or portal) and the license cost more than 4000$/per user/per year

Why don't you use the built-in basemaps ???

ArcMAP 10.3 will be supported until (at least) 2022 as every version is supported at least 8 years (told at a specialist meeting at UC15).

Use ArcGIS Explorer

The centrograpic tools and global statistic tools (mean, standard distance, directional distribution, NNI and Getis-Ord General(Gearys C)) will tell you if there is patterns and clusters in your data and how significant they are but NOTHING about where and why. You might need to manipulate/change/add your data before you can perform a Getis-Ord Gi* test (also one with automatic rendering). This tool will tell you WHERE your coldspots are and your hotspots are and the area that is 'not significant' and it will do it at a 90-95-99% confidence level and give you values about observed distance and expected distance and other values that is statistical proven. KDE and Hotspot analysis is two different things and therefore NOT comparable although MANY police forces uses the KDE. The KDE will hide your coldspots.....depending on your threshold it will increase/decrease your density.....if use over different polygons/areas it will give you different outputs that are not in the same scale but only relevant to the dataset.....Getis-Ord Gi* does NOT do this. Intended or unintended you could lead he user/reader into misinterpretation with a KDE......this would be almost impossible with the Gi* A good reference is the 'Understanding hotspot' by Chainey et al and published by NIJ in 2005 (National Institute of Justice)

Well a KDE is NOT a hotspot (although many think so and use it as)....It only shows you a relative density and has NO statistic footing....If you want a hotspot/coldspot output that is statistically worthy and reliable you need to use the centrographic tools in Spatial Statistical and especially the Getis-Ord Gi*

Hi out there, I have been tasked to do comment on the quality of a LIDAR product. But the only thing I've got is a "point cloud" as a shapefile and no other information. There is no metadata or text in the description. How do I do the QA/QC then ??

What kind of data do you have to begin with ? As I think you need one with "obstacles" and one without.....then it would be (obstacles - without)....but they have to have the same resolution then, otherwise you must resample fist

Hi I'm doing a Masters in Geospatial Intelligence and need a dissertation topic....anyone with some ideas ?

Hi there, What is the best open source software out-there to do Supervised/unsupervised image classification and can be compared to same procedures in ArcGIS, ENVI and ERDAS ?

it's still .mxd But with version 10 the mxt dissapeared

And this one www.teachmegis.com/outlines/Mastering Expressions - PUG 2011.pdf

I used these when I started, so try them.....learn a bit from them and search Google. http://help.arcgis.c...500000033000000 https://docs.google....WdfpowlFZ5Fihaw

Mosaic Datasets

In ArcMap you are using query's in Query expressions Query builder (Select by attributes, Definition query, label classes etc.) Label Expressions (VB Script or Jscript) Calculator expressions (either VB Script or python expressions) Most of the expressions are built upon Structured Query Language (SQL) in a kind of "where clauses" like <field_name><operator><value>, so perhaps you should start by reading something about that. It's to difficult or complex for me to explain here. Further more there is different syntax variations depending of, if you are using it on data in a personal-, filebased- or SDE database.

Feature extraction.....you can get an ArcGIS extension for this....but I don't think there's any "medicine" for it.

What kind of data are you talking about? Version 9.3 can open a version 9.1. mxd, but there can be some problems if you have the data in a older database.

I'm don't think that you in the model can use multiple wildcards just as.......i think you have to use python for that (and i don't know shit about python ) Otherwise you could make "nested models".......1) A main model with the merged output from the 3 submodels as are: 2)The iterator with wildcard a* + 3) The iterator with wildcard b* and 4) The iterator with wildcard c*

have you selected the extension under "extensions" ?

Which "model" did you choose to get it to work ?

This could do it: 1) Create an Mosaic Dataset (in a file geodatabase) instead of the Raster Catalog. 2) Load all your rasters in to the Moasaic Dataset. 3) Use the "Select tool" to select the Raster tiles you need (it will highlight a lot of lines/boxes). 4) in TOC under the Moasaic Dataset's "Footprint" choose "Selection"...and "Select Only Primary Rasters" (now it will only highlight the ones you choosed). 5A) You could now under "Selection" under "Footprint" choose "Add selected raster to TOC" (you will then have to "save them" to a user specifict place and some times convert them to another format). 5B) You could now under "DATA" under "Footprint" choose "Download selected Raster"...to a user specified location (this will give you the original Rasters and you can even convert them on the fly to for example JPEG or TIFF instead of ECW). 6) Send your output to your customer. 7) Drink a beer and be happy...job solved.

Hi there. I have to clip a lot of featureClasses to a filegeodatabase and some of those will be with a empty output. I need to use them in a model and inthere convert them to rasters, but I can't do that with a empty output. Is there a tool...a model...a script....that i can use to find those featureClasses/tables with a empty output instead of open each one in arcmap and look manually????

Thanks.....i knew that, but was more a "tutorial" or a pixi-book

Hi there I need to make a simple analyse like a hot spot, clustering or density. The point is to have, let us say.......250 random point on a map......5 x attributes row with random numbers from 1-5. Then i need to find some kind of clustering or hotspots to where there are most with one's or with a summary under 9. I do not wish just to do it with "select by attributes", but more like a kind of "crime analysis"...but SIMPLE...anyone?