gmt file olah belajar onlen

1. Generic Mapping Tools

2. Teknik Dasar
Grafik log psbasemap –Rposisi -
JXjenislog9il/6il -BWSstengah
Conic beda map ukuran dengan pscoast -R-13lat/lon JB
JX
JB
R lat/lon
JM
Ggreen
R lat/lon
JM
JM
Ba
Pscoast
-R lat/lon
JM
-Ba2g4
psscale
JX
-BWS
JG
JK
JM
-R

3. Plot danContour
Contouring grdcontour -
A1000 ukuran kontur
Plot peta dasar psbasemap -JMukuranpeta12 -X4.5
–Rlatmin/latmax/lonmin/lonmax -
Ba4g4gridkoordinatWSne
Plot titik psxy

4. Illuminasi
Memotong peta grdcut x.nc -R-lat/-lot -Gx.nc, buat warna makecpt -Crainbow -
Tmin/max/selisih -Z > t.cpt, meplot peta iluminasi grdimage xs.nc -JM6i -Portrait -Ba -
Cutkwarna.cpt -Verbose -K

5. Illuminasi
Plot Illuminasi grdimage us.nc -Ius_i.nc -JM6i ukuran 6
inch -Portrait -Ba -Cwarna.cpt -K > y.ps

6. 3D
Membuat cpt grd2cpt a.nc -Cocean >
a.cpt
Membuat mesh grdview a.nc -
JMukuran5i -P -JZ2i –
pkemiringan135/30 –Bagridkoordinat -
C.cpt > A.ps
Mesh illuminasi grdview us.nc -JM6i -
p135/35 -Qi50 -Ius_i.nc -Ctopo.cpt -V -
Ba -JZ0.5i >B.ps
A.)
B.)

7. Illuminasi
Iluminasi teknik sama Cuma beda lokasi

8. Plot Skala bar dan legenda
Plot peta topografi grdimage indo.nc -R -JM -Celev.cpt -K -O - Plot grid Ba2g1wsne >> e.ps
Plot peta dasar psbasemap -JM12 -X4.5 >e.ps
Plot garis pantai pscoast -JM -R -Ggreen -Sblue -Dh -Wthin -K -P -O >> %F%
-Df untuk mengontrol kerapatan Df : penuh, Dh: tinggi, Di : menengah, Dl : rendah, Dc : kasar
Plot skala bar psscale dan Plot legenda pslegend

9. Plot titik psxy, Plot focal psmeca, Plot kota echo 104 -5.2 90 7.4 Liwa LTlefttop >
la.d simbol psxy -R -J -Overlay -Ktambahan –Ssukurankotak0.5 -Gwarnared -
Wthinnest liwa.d >>%F%

10. Plot Transform dan GSF
Plot trench psxy -R -JM -Wtebal2.0 -Sfsegitiga0.3i/0.1ilt -Dh -Gblack -m -Overlay -K
trench.gmt>> %F%
Plot transform psxy -R -JM -Wthicker -O -K transform.gmt -Dh -m >> %F%
Plot Sesar besar SMTR psxy -R -JM -Wthinner,- -m -O -K GSFML_SF_FZ_KM.gmt >> %F%
Plot Sesar besar SMTR psxy -R -JM -Wthinnest,- -m -O -K GSFML_SF_ER_KM.gmt >> %F%
Download dulu data2 file .gmt online

11. Plot anomali
Download data gravitasi dari Earthbyte dan data model magnet EMAG3 dari
GEOMAG.
Data mag ASCII. Jadi perlu filtering
Filtering data blockmean WDMAM_NGDC_V1.1.xyz
Gridding/plot data surface mag.xyz -R%R% -I1.5m -GWDMAM_NGDC_V1.1.grd

12. Plot anomali selat sunda
Coba di contoh lain tempat

13. Data Slab dan Transparency
-t20 -t80
Tampilan slab grdview %data_slab%
Kemiringan -p100/15 azimuth 100
elev 15 , Overlay -O

14. Interpolasi dan clip
Clip - pscoast –Gc , Filter blockmean pga.xyz -R%R% -I0.001 ,
Interpolasi surface mean.xyz -R -I0.001 -Gdata.grd