استخدام نظم المعلومات الجغرافية في إنشاء و تمثيل بيانات نموذج الارتفاع الرقمي لنماذج مختارة من شمال العراق

الملخص EN

Using the Geographical Information System (GIS) by personal computer facilitated the way to build up database that depend on the properties of the topographic map, or the images (satellite and aerial photography).

These programs can’t analyze the information on the map unless these data are in digital format (vector data).

The most important program that converts the raster data that represent the maps printed on paper to vector data is called (Raster to vector (R2V)) program.

The capability of some GIS programs (R2V, Surfer and ArcWiew) in wilding digital data base which is faster and more accurate than the classical vay that depends on the calculating of the elevation Network or by using the ligitizer for measuring the coordinates of the points in the topographic naps, and that what the present study is to tackle.

From these digital data we have try to build up a model of 3D topography \vhich is called Digital Elevation Model (DEM) that gives more easier realization and interpretation.

A faster result and shorter time to produce the (DEM) also characterize this method.

Two samples are chosen from two regions (Makhmour and Ain Sifni) at the northern Iraq to test this method and also to prepare the statistical tables for digital data that resulted during this study.