TUTORIAL
PROGRAM ER MAPPER
1. Buka program ER Mapper > Edit algorithm > Surface > rainbow
> load dataset (ambil file .ers) > Create RGB algoritm (4,2,1) >
refresh image with 99% clip on limit.
2. Edit > Edit/ create region > ok > polygon > training
area (beri nama) > save > process > calculate statistics.
3. View > statistics > means summary report > input dataset
> print/save > file only (simpan file dalam .text) > ok
4. Buka program excel > open
file ( buka file tadi .text) > hitung nilai varian yaitu:
=var(data band 1) > hitung nilai covarian yaitu
=cover(data band 1 & band 2) > didapat nilai
a = varTM– varTM 2 > didapat
nilai Ki/Kj = a + akar a2+1
2cov arTM1TM2
5. Buka program ER Mapper > Open file > Edit > Edit/edit
create region > hapus training area > save > Open file yang baru >
E=mc2 ( if i1<=20 then log(i2) + Ki/Kj log(i3) else null) >
apply change > Input (1=b4, 2=b1, 3=b2) > apply.
6. Trainning area > save > process > Calculate statistics >
process > classification > supervised classification > beri nama dalam
.ers > maximum likelihood standard > ok
7. Open file yang baru disave > class display > edit > edit
class name (beri nama & warna pada masing-masing objek) >save.
8. Utilities > export raster >arc/info bil > export.
9. Buka program arc view > Extension ( ECW v2.0 and ER Mapper
Images, Geoprocessing, Grid Analyst Extension (ver 1.1), Image anlysis, Spatial
analyst > add them (buka file yang tadi) > data source type (image data
source) > ok.Theme > convert to grid > Filter (Generilize grid >
remove noise, majority filter, smoth edge
10. Buat tema lagi untuk menentukan dive spot dan luasan terumbu karang
11. Layout : Theme>layout>ok
Beri atrubut –atribut tambahan bila perlu.
12. Simpan dalam format yang di inginkan. File>export(beri
nama.jpg)>ok
13. Hasil layout (format.jpg)
