Comparative analysis of slope and aspect between ArcMap tin and grid DEM

Load raw data （TIN data ）, As shown in the figure above .

1:3D Analysis tools .
2： Surface triangulation .
3： Surface slope .
4： input data .
5： Output address and naming .
6：degree Degree means ,percent It means percentage .
7： Slope classification field , It is divided into 10 level ,1 Level corresponds to 0~10 degree .

Output results （TIN data ） As shown in the figure .

Load raw data （ raster data ）, The picture above .

1：3D Analysis tools .
2： Grid surface .
3： slope .
4： input data .
5： Output address and naming .

result .

By comparing the results of the two, we can know ,TIN The result of slope analysis is a polygon feature class , What you get is the grade of the slope , The raster data gets the slope value , therefore , The latter is more accurate than the former , You can think about TIN Convert to raster data , Then calculate the slope .

alike , Conduct slope aspect analysis for both ：

1： Surface triangulation .
2： Surface aspect .
3： input data .
4： Output address .
5： determine .

Output results .

You can see tin Data and grids DEM The same is true of the slope direction output of the data , The latter is more elaborate .