;+ ; PROGRAM: iug_crib_gmag_serc ; This is an example crib sheet that will load the MAGDAS magnetometer data ; released by Space Environment Research Center(SERC), Kyushu University, Japan. ; Open this file in a text editor and then use copy and paste to copy ; selected lines into an idl window. Or alternatively compile and run ; using the command: ; .RUN IUG_CRIB_GMAG_SERC ; ; NOTE: For more information about MAGDAS and its rules of the road, see: ; http://magdas.serc.kyushu-u.ac.jp/ ; Written by: Shuji Abe, May 01, 2011 ; Space Environment Research Center, Kyushu University, Japan ; abeshu _at_ serc.kyushu-u.ac.jp ; ;- ; initialize thm_init ; set the date and duration (in days) timespan, '2008-03-28' ; load MAGDAS data iug_load_gmag_serc,site=['ONW','CMD','ANC'] ; view the loaded data names tplot_names stop ; change view region tplot_options, 'region', [0.05, 0, 1, 1] ; plot the loaded data tplot,'magdas_mag_*' stop ; subtract mean value and replot data ; following example show tplot variables operations using low level commands get_data, 'magdas_mag_onw', data=d for i=0,3 do d.y(*,i)=d.y(*,i)-mean(d.y(*,i),/NaN) store_data, "magdas_mag_onw_new", data=d options, "magdas_mag_onw_new", labels=['H','D','Z','F'] , colors=[2,4,6,0],$ ytitle = 'MAGDAS ONW', $ ysubtitle = '[nT]' get_data, 'magdas_mag_cmd', data=d for i=0,3 do d.y(*,i)=d.y(*,i)-mean(d.y(*,i),/NaN) store_data, "magdas_mag_cmd_new", data=d store_data, "magdas_mag_cmd_new", data=d options, "magdas_mag_cmd_new", labels=['H','D','Z','F'] , colors=[2,4,6,0],$ ytitle = 'MAGDAS CMD', $ ysubtitle = '[nT]' get_data, 'magdas_mag_anc', data=d for i=0,3 do d.y(*,i)=d.y(*,i)-mean(d.y(*,i),/NaN) store_data, "magdas_mag_anc_new", data=d store_data, "magdas_mag_anc_new", data=d options, "magdas_mag_anc_new", labels=['H','D','Z','F'] , colors=[2,4,6,0],$ ytitle = 'MAGDAS ANC', $ ysubtitle = '[nT]' tplot, 'magdas_mag_*_new' stop ; set new timespan timespan,'2008-03-28/10:00:00',4,/hours ; set y-axis ylim,'magdas_mag_*_new',-50,50 ; replot tplot end