Slope Analysis/Reclassify from a DEM in QGIS 3 (in degrees/percentage)

Reclassification of a Slope/Raster in QGIS 3
1. At first load your DEM Raster to Qgis canvas/screen,
2. If your Input DEM Raster is on 'Degree/WGS_1984' then,
Reproject your DEM Raster layer's EPSG from Geographic CRS 'Degree/WGS_1984' to
Projected CRS 'Transverse_Mercator/WGS_1984_UTM_Zone_..N'
#[Raster-Projections-Warp 'reproject']
3. Now, goto Raster-Analysis-Slope,
4. On processing toolbox, type reclass and select 'Reclassify by table',
5. If you want to vectorize that classified slope then go to Raster-conversion-Raster to Vector
To download Processing Algorithms (tools for automation):
1. For Projected DEM: drive.google.com/file/d/1PBRy...
2. For Geographic (WGS DEM):
drive.google.com/file/d/1dyjy...

[@rahulrajan7840]

thanks, heaps mate, I have been searching for a solution to my problem for ages nothing seemed to fix it. your method worked! cheers!

[@dezeindra2190]

Thanks for video sir..sir if I would like analyze one dtm relative to another dtm as reference...and the result is a classify dtm every 1 meter above and below the reference dtm...how to do that?

[@AntNuz]

I don' understand. When shapfile has been created, it doesn't look like the reclassified raster...
How can I get a shapefile with the exactly the same classes of raster?
thank you a lot...

[@filsvainqueurByiringiro]

you will have to polygonise

[@Itsjikri]

why the map turns orange after it is polygonized

[@KapildevAdhikari]

By system, you have to categorize from symbology

[@EmanKurmi]

How's the minimum and maximum value taken?

[@KapildevAdhikari]

Checkout my latest video

[@DodemMahapat]

why you used min

[@KapildevAdhikari]

It reclassifies a raster band by assigning new class values based on the ranges specified in a fixed table. That is a comparison rules for the classification: the expression "min