Changes between Initial Version and Version 1 of DVO_Example_simtest

Timestamp:

Jan 19, 2010, 9:46:04 PM (16 years ago)

Author:

eugene

Comment:

--

DVO_Example_simtest

@@ +1 @@
+== DVO Example using the Simtest reference database ==
+
+This example uses the simtest reference database (catdir.grizy.simtest):
+
+* Display the area covered by the database:
+
+{{{
+catdir catdir.synth.simtest/
+resize 1000 500
+region 180 0 90 ait
+cgrid -c red; skycat
+}}}
+
+
+* Zoom in on an area with data:
+{{{
+region 151 3.5 3.0
+box
+skycat -c red -lw 2
+pmeasure -all -m 10 15 -pt 7
+label -x "ra offset" -y "dec offset" +x "region 151 3.5 3.0"
+png -name sample.region.large.png
+}}}
+
+* Zoom in on a smaller region
+{{{
+region 151 3.5 0.25
+box
+pmeasure -all -m 10 15 -pt 7
+label +x "region 151 3.5 0.25"
+png -name sample.region.small.png
+}}}
+
+* Make a color-color diagram (average magnitudes)
+{{{
+avextract -region ra, dec, objid, g_SYNTH, r_SYNTH, i_SYNTH, z_SYNTH, y_SYNTH
+set gr = g_SYNTH - r_SYNTH
+set ri = r_SYNTH - i_SYNTH
+lim -n 1 gr ri; clear; box; plot gr ri
+label -x "g - r" -y "r - i"
+png -name sample.cmd.png
+}
+
+* Extracting data on a specific object (three methods):
+{{{
+gstar -m ra[0] dec[0] 0.001
+gstar -m ra[0] dec[0] 0.001 -full
+mextract -region RA, DEC, MAG, TIME where ((abs(RA - ra[0]) < 0.001) && (abs(DEC - dec[0]) < 0.001))
+}}}