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21 views

Map with custom tiles having uncommon EPSG

I've produced with mapnik my own tiles with EPSG:31256 on a shapefile. I've structured the tiles in a OSM-like tree: zoom/x/y.png, with zoom from 0 to 2 and, x y starting from 1: tiles ├── 0 │ ...
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2answers
66 views

importing XYZ to arcmap

My colleague has several hundred xyz files (*.xyz) and wants to make a DEM to use it in ArcMap. Files have three columns witohut first lane (variable names). I suggested her: 1- to add first line ...
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2answers
105 views

convert geotiff to simple xyz elevation file?

I have looked everywhere and can not find a tool to convert a geotiff file to a simple ascii elevation file... did I miss something? thanks for any pointers!
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0answers
74 views

Print XYZ layer with MapFish Print plugin

I have a XYZ layer(i hope i call it right) in GeoExt/gxp application: ,{source: "ol",group: "background",fixed: true,type: "OpenLayers.Layer.XYZ",args: ...
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1answer
91 views

easting , northing and elevation. convert to station and elevation

how can i convert x,y,z ( eastings, northings and elevation) data into station and eleveation.I am trying to input the data into HEC-RAS which only takes station and elevation.
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2answers
94 views

What software is available on OSX for working with DEMs?

I have several adjacent DEM files and would like to combine them into a mosaic and then export to DEM and TXT. I know a Windows solution is to use MICRODEM but before installing Windows 7 I would like ...
4
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2answers
133 views

Huge x,y,z dataset into oracle, possible?

I have 200 .xyz files containing 1500000 points each. Is this possible to import this dataset to oracle? It makes a total of 300.000.000 points!!! Background is I want to improve a FME script that ...
4
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3answers
175 views

Finding outliers with wrong Z values in LIDAR data

I have more than 2000 XYZ .txt files and I have to do QC: let's say I have file, which I converted to multipoint (or even singlepart feature). I have mean Z value for a file, but ... if most of the ...
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2answers
134 views

Symbolizing xyz data

I have hydrographic data in the form of an xyz file. I would like to display it in ArcMap. I need to symbolize the points based on their depth, shallow points one colour and deep points another. With ...
5
votes
2answers
392 views

What is XYZ format in QGIS?

Basic question, but I have been asked to export data to an XYZ format. Is this the same as CSV files. I am using QGIS 1.8.0. So i am presuming i select the data I want to export, right click its ...