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spectra.ncl @ 769

Last change on this file since 769 was 769, checked in by heinze, 13 years ago
Bugfixes in case of plot of t=0h and plot of topography zusi/zwwi possible
File size: 23.1 KB

Rev	Line
[176]	1	load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
	2	load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
	3	load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/contributed.ncl"
	4
[190]	5	;***************************************************
[418]	6	; load .ncl.config or .ncl.config.default
[190]	7	;***************************************************
[194]	8
	9	function which_script()
	10	local script
	11	begin
	12	script="spectra"
	13	return(script)
	14	end
[190]	15
[418]	16	if (isfilepresent("$PALM_BIN/../../.ncl.config")) then
	17	loadscript("$PALM_BIN/../../.ncl.config")
[190]	18	else
[418]	19	if (isfilepresent("$PALM_BIN/NCL/.ncl.config.default")) then
	20	loadscript( "$PALM_BIN/NCL/.ncl.config.default")
[190]	21	else
[418]	22	palm_bin_path = getenv("PALM_BIN")
[190]	23	print(" ")
[418]	24	print("Neither the personal configuration file '.ncl.config' exists in")
	25	print("~/palm/current_version")
[566]	26	print("nor the default configuration file '.ncl.config.default' "+\
	27	"exists in")
[418]	28	print(palm_bin_path + "/NCL")
[190]	29	print(" ")
	30	exit
[176]	31	end if
[418]	32	end if
[218]	33
[190]	34	begin
[176]	35
[190]	36	;***************************************************
[532]	37	; Retrieving the NCL version used
	38	;***************************************************
	39
	40	ncl_version_ch = systemfunc("ncl -V")
	41	ncl_version = stringtofloat(ncl_version_ch)
	42
	43	;***************************************************
[526]	44	; Retrieving the double quote character
	45	;***************************************************
	46
	47	dq=str_get_dq()
	48
	49	;***************************************************
[190]	50	; set up default parameter values and strings
	51	;***************************************************
	52
	53	if (file_1 .EQ. "File in") then
	54	print(" ")
[418]	55	print("Declare input file 'file_1=' in '.ncl.config' or prompt")
[190]	56	print(" ")
	57	exit
[176]	58	else
	59	file_in = file_1
	60	end if
	61
[566]	62	if (format_out .NE. "x11" .AND. format_out .NE. "pdf" .AND. \
	63	format_out .NE. "eps" .AND. format_out .NE. "ps" .AND. \
	64	format_out .NE. "epsi" .AND. format_out .NE. "ncgm" .AND. \
	65	format_out .NE. "png")then
[190]	66	print(" ")
	67	print("'format_out = "+format_out+"' is invalid and set to'x11'")
	68	print(" ")
	69	format_out="x11"
	70	end if
[532]	71
	72	if (ncl_version .LE. 5.1 .AND. format_out .EQ. "png") then
	73	print(" ")
	74	print("Output of png files not available")
	75	print("png output is avaiable with NCL version 5.2.0 and higher ")
	76	print("NCL version used: " + ncl_version_ch)
	77	print(" ")
	78	exit
	79	end if
[190]	80
[218]	81	if (log_x .NE. 0 .AND. log_x .NE. 1)then
[190]	82	print(" ")
[218]	83	print("'log_x'= "+log_x+" is invalid and set to 1")
[190]	84	print(" ")
[218]	85	log_x = 1
[190]	86	end if
	87
[218]	88	if (log_y .NE. 0 .AND. log_y .NE. 1)then
[190]	89	print(" ")
[218]	90	print("'log_y'= "+log_y+" is invalid and set to 1")
[190]	91	print(" ")
[218]	92	log_y = 1
[190]	93	end if
	94
[218]	95	if (norm_y .EQ. 0.) then
[190]	96	print(" ")
[218]	97	print("Normalising with 0 is not allowed, 'norm_y' is set to 1.0")
[190]	98	print(" ")
[218]	99	norm_y = 1.0
[176]	100	end if
[218]	101	if (norm_x .EQ. 0.) then
[190]	102	print(" ")
[218]	103	print("Normalising with 0 is not allowed, 'norm_x' is set to 1.0")
[190]	104	print(" ")
[218]	105	norm_x= 1.0
[176]	106	end if
[190]	107
	108	if (sort .NE. "height" .AND. sort .NE. "time") then
	109	print(" ")
	110	print("'sort'= "+sort+" is invalid and set to 'height'")
	111	print(" ")
	112	sort = "height"
[176]	113	end if
[190]	114
	115	if (black .NE. 0 .AND. black .NE. 1)then
	116	print(" ")
	117	print("'black'= "+black+" is invalid and set to 0")
	118	print(" ")
[176]	119	black = 0
	120	end if
[190]	121
	122	if (dash .NE. 0 .AND. dash .NE. 1)then
	123	print(" ")
	124	print("'dash'= "+dash+" is invalid and set to 0")
	125	print(" ")
[176]	126	dash = 0
	127	end if
	128
[190]	129	;***************************************************
	130	; open input file
	131	;***************************************************
[218]	132
	133	file_in_1 = False
	134	if (isStrSubset(file_in, ".nc"))then
	135	start_f = -2
	136	end_f = -2
	137	file_in_1 = True
	138	end if
[176]	139
[218]	140	if (start_f .EQ. -1)then
	141	print(" ")
[566]	142	print("'start_f' must be one of the cyclic numbers (at least 0) of "+\
	143	"your input file(s)")
[218]	144	print(" ")
	145	exit
	146	end if
	147	if (end_f .EQ. -1)then
	148	print(" ")
[566]	149	print("'end_f' must be one of the cyclic numbers (at least 0) of "+\
	150	"your input file(s)")
[218]	151	print(" ")
	152	exit
	153	end if
	154
	155	files=new(end_f-start_f+1,string)
[176]	156
[218]	157	if (file_in_1)then
	158	if (isfilepresent(file_in))then
	159	files(0)=file_in
	160	else
	161	print(" ")
	162	print("1st input file: '"+file_in+"' does not exist")
	163	print(" ")
	164	exit
	165	end if
	166	else
	167	if (start_f .EQ. 0)then
	168	if (isfilepresent(file_in+".nc"))then
	169	files(0)=file_in+".nc"
	170	do i=1,end_f
	171	if (isfilepresent(file_in+"."+i+".nc"))then
	172	files(i)=file_in+"."+i+".nc"
	173	else
	174	print(" ")
	175	print("Input file: '"+file_in+"."+i+".nc' does not exist")
	176	print(" ")
	177	exit
	178	end if
	179	end do
	180	else
	181	print(" ")
	182	print("Input file: '"+file_in+".nc' does not exist")
	183	print(" ")
	184	exit
	185	end if
	186	else
	187	do i=start_f,end_f
	188	if (isfilepresent(file_in+"."+i+".nc"))then
	189	files(i-start_f)=file_in+"."+i+".nc"
	190	else
	191	print(" ")
	192	print("Input file: '"+file_in+"."+i+".nc' does not exist")
	193	print(" ")
	194	exit
	195	end if
	196	end do
	197	end if
	198	end if
	199
	200	f=addfiles(files,"r")
	201	f_att=addfile(files(0),"r")
	202	ListSetType(f,"cat")
	203
	204	vNam = getfilevarnames(f_att)
[585]	205	vType = getfilevartypes(f_att,vNam)
	206
	207	if ((all(vType .eq. "double"))) then ;distinction if data is double or float
	208	check_vType = True
	209	else
	210	check_vType = False
	211	end if
	212
[176]	213	print(" ")
[190]	214	print("Variables in input file:")
	215	print("- "+ vNam)
[176]	216	print(" ")
	217	dim = dimsizes(vNam)
[218]	218	vDim = getfiledimsizes(f_att)
[176]	219
[218]	220	t_all = f[:]->time
[176]	221	nt = dimsizes(t_all)
	222	delta_t=t_all(nt-1)/nt
	223
[218]	224	k_x=f_att->k_x
[190]	225	dimx=dimsizes(k_x)
[218]	226	k_y=f_att->k_y
[190]	227	dimy=dimsizes(k_y)
	228
	229
	230	dim_level=dimsizes(height_level)
	231
[176]	232	do i=0,dim-1
	233	if (vNam(i) .EQ. "zu_sp")then
[218]	234	zu=f_att->zu_sp
[190]	235	if (height_level(0) .EQ. -1)then
	236	dimz=dimsizes(zu)
	237	else
	238	if (dim_level .GT. dimsizes(zu))then
	239	print(" ")
[566]	240	print("'height_level' has more elements than available "+\
	241	"height levels in input file (= "+dimsizes(zu)+")")
[190]	242	print(" ")
	243	exit
	244	else
	245	zuh=new(dim_level,double)
	246	do le=0,dim_level-1
[566]	247	if (height_level(le) .GE. dimsizes(zu)) then
	248	no_levels=dimsizes(zu)-1
	249	print(" ")
	250	print("Element "+le+" of 'height_level' is greater " +\
	251	"than the maximum available index in input file "+\
	252	"which is "+no_levels+". Note that the first " +\
	253	"element has the index 0.")
	254	print(" ")
	255	exit
	256	end if
[190]	257	zuh(le)=zu(height_level(le))
	258	end do
	259	dimz=dim_level
	260	end if
	261	end if
[176]	262	else
	263	if (vNam(i) .EQ. "zw_sp")then
[218]	264	zw=f_att->zw_sp
[190]	265	if (height_level(0) .EQ. -1)then
	266	dimz=dimsizes(zw)
	267	else
	268	if (dim_level .GT. dimsizes(zw))then
	269	print(" ")
[566]	270	print("'height_level' has more elements than available "+\
	271	"height levels in input file (= "+dimsizes(zw)+")")
[190]	272	print(" ")
	273	exit
	274	else
	275	zwh=new(dim_level,double)
	276	do le=0,dim_level-1
[566]	277	if (height_level(le) .GE. dimsizes(zw)) then
	278	no_levels=dimsizes(zw)-1
	279	print(" ")
	280	print("Element "+le+" of 'height_level' is greater "+\
	281	"than the maximum available index in input " +\
	282	"file which is "+no_levels+". Note that the " +\
	283	"first element has the index 0.")
	284	print(" ")
	285	exit
	286	end if
[190]	287	zwh(le)=zw(height_level(le))
	288	end do
	289	dimz=dim_level
	290	end if
	291	end if
[176]	292	end if
	293	end if
	294	end do
[190]	295
	296	;****************************************************
[176]	297	; start of time step and different types of mistakes that could be done
[190]	298	;****************************************************
[176]	299
[190]	300	if (start_time_step .EQ. -1.d) then
[176]	301	start_time_step=t_all(0)/3600
[190]	302	else
[176]	303	if (start_time_step .GT. t_all(nt-1)/3600)then
	304	print(" ")
[566]	305	print("'start_time_step' = "+ start_time_step +"h is greater than "+\
	306	"last time step = "+ t_all(nt-1)+"s = "+t_all(nt-1)/3600+"h")
[176]	307	print(" ")
[218]	308	print("Select another 'start_time_step'")
[176]	309	print(" ")
	310	exit
	311	end if
	312	if (start_time_step .LT. t_all(0)/3600)then
	313	print(" ")
[566]	314	print("'start_time_step' = "+ start_time_step +"h is lower than "+\
	315	"first time step = "+ t_all(0)+"s = "+t_all(0)/3600+"h")
[176]	316	exit
	317	end if
	318	end if
	319
	320	do i=0,nt-1
[566]	321	if (start_time_step .GE. (t_all(i)-delta_t/2)/3600 .AND. \
	322	start_time_step .LT. (t_all(i)+delta_t/2)/3600)then
[176]	323	st=i
	324	break
[769]	325	else
	326	st=0
[176]	327	end if
	328	end do
	329
[190]	330	;****************************************************
[176]	331	; end of time step and different types of mistakes that could be done
[190]	332	;****************************************************
[176]	333
[190]	334	if (end_time_step .EQ. -1.d) then
[176]	335	end_time_step = t_all(nt-1)/3600
	336	else
	337	if (end_time_step .GT. t_all(nt-1)/3600)then
	338	print(" ")
[566]	339	print("'end_time_step' = "+ end_time_step +"h is greater than "+\
	340	"last time step = " + t_all(nt-1)+"s = "+t_all(nt-1)/3600+"h")
[176]	341	print(" ")
[218]	342	print("Select another 'end_time_step'")
[176]	343	print(" ")
	344	exit
	345	end if
	346	if (end_time_step .LT. start_time_step/3600)then
	347	print(" ")
[566]	348	print("'end_time_step' = "+ end_time_step +"h is lower than "+\
	349	"'start_time_step' = "+start_time_step+"h")
[176]	350	print(" ")
[218]	351	print("Select another 'start_time_step' or 'end_time_step'")
[176]	352	print(" ")
	353	exit
	354	end if
	355	end if
	356
	357	do i=0,nt-1
[566]	358	if (end_time_step .GE. (t_all(i)-delta_t/2)/3600 .AND. \
	359	end_time_step .LT. (t_all(i)+delta_t/2)/3600)then
[176]	360	et=i
	361	break
[769]	362	else
	363	et=0
[176]	364	end if
	365	end do
	366
	367	delete(start_time_step)
	368	start_time_step=round(st,3)
	369	delete(end_time_step)
	370	end_time_step=round(et,3)
	371
	372	print(" ")
[566]	373	print("Output of time steps from "+t_all(start_time_step)/3600+" h = "+\
	374	t_all(start_time_step)+" s => index = "+start_time_step)
	375	print(" till "+t_all(end_time_step)/3600+" h = "+\
	376	t_all(end_time_step)+" s => index = "+end_time_step)
[176]	377	print(" ")
	378
	379	dimt = end_time_step-start_time_step+1
	380
[190]	381	;***************************************************
[176]	382	; set up recourses
[190]	383	;***************************************************
[176]	384
	385	res = True
	386	res@gsnDraw = False
	387	res@gsnFrame = False
	388	res@txFont = "helvetica"
	389	res@tiMainFont = "helvetica"
	390	res@tiXAxisFont = "helvetica"
	391	res@tiYAxisFont = "helvetica"
	392	res@tmXBLabelFont = "helvetica"
	393	res@tmYLLabelFont = "helvetica"
	394	res@lgLabelFont = "helvetica"
	395	res@tmLabelAutoStride = True
	396
[218]	397	res@lgLabelFontHeightF = font_size_legend
	398	res@lgTitleFontHeightF = font_size
	399	res@txFontHeightF = font_size
	400	res@tiXAxisFontHeightF = font_size
	401	res@tiYAxisFontHeightF = font_size
	402	res@tmXBLabelFontHeightF = font_size
	403	res@tmYLLabelFontHeightF = font_size
	404
	405	res@tmXBMinorPerMajor = 4
	406	res@tmYLMinorPerMajor = 4
	407
	408	if (log_x .EQ. 1) then
[176]	409	res@trXLog = True
[190]	410	else
	411	res@trXLog = False
	412	end if
[218]	413	if (log_y .EQ. 1)then
[176]	414	res@trYLog = True
[190]	415	else
[178]	416	res@trYLog = False
[176]	417	end if
	418
[566]	419	legend_label=new(dimt,string)
[176]	420	legend_label_zu=new(dimz,double)
	421	legend_label_zw=new(dimz,double)
	422	legend_label_z=new(dimz,double)
	423	do p=start_time_step,end_time_step
[566]	424	legend_label(p-start_time_step)=sprintf("%6.2f", t_all(p)/3600)
[176]	425	end do
	426	if (sort .EQ. "time")
	427	plot = new(dim*dimz,graphic)
	428	np=dimt
[534]	429	res@lgTitleString = "Time (h)"
[176]	430	else
	431	plot = new(dim*dimt,graphic)
	432	np=dimz
[218]	433
[176]	434	do p=0,dimz-1
[190]	435	if (height_level(0) .EQ. -1)then
	436	legend_label_zu(p)=round(zu(p),3)
	437	legend_label_zw(p)=round(zw(p),3)
	438	else
	439	legend_label_zu(p)=round(zuh(p),3)
	440	legend_label_zw(p)=round(zwh(p),3)
	441	end if
[176]	442	end do
	443	end if
[194]	444
	445	if (black .eq. 0 ) then
	446	if (np .EQ. 1)then
[218]	447	color = 237
[194]	448	else
	449	step=round(235/(np-1),3)
[218]	450	color = ispan(2,237,step)
[194]	451	end if
[324]	452	else
	453	color = 2
[176]	454	end if
	455	if ( dash .eq. 0 ) then
[190]	456	res@xyMonoDashPattern = True
[176]	457	end if
	458
[532]	459	if ( format_out .EQ. "pdf" .OR. format_out .EQ. "ps" ) then
	460	format_out@wkPaperSize = "A4"
	461	end if
	462	if ( format_out .EQ. "png" ) then
	463	format_out@wkWidth = 1000
	464	format_out@wkHeight = 1000
	465	end if
	466
[176]	467	wks=gsn_open_wks(format_out,file_out)
	468	gsn_define_colormap(wks,"rainbow+white")
	469
	470	n=0
	471	do varn =dim-1,0,1
[178]	472
[176]	473	check = True
	474
[566]	475	if ( isStrSubset( vNam(varn), "time") .OR. \
	476	isStrSubset( vNam(varn), "zu_sp") .OR. \
	477	isStrSubset( vNam(varn), "zw_sp") .OR. \
	478	isStrSubset( vNam(varn), "k_x") .OR. \
	479	isStrSubset( vNam(varn), "k_y")) then
[176]	480	check = False
	481	end if
	482
[190]	483	if (var .NE. "all") then
[176]	484	check = isStrSubset( var,","+vNam(varn)+"," )
	485	end if
	486
[190]	487	if(check) then
[218]	488
	489	temp = f[:]->$vNam(varn)$
[566]	490	data = temp(start_time_step:end_time_step,0:dimz-1,:)
[218]	491
	492	temp_att = f_att->$vNam(varn)$
	493	a=getvardims(temp_att)
[190]	494	b=dimsizes(a)
[534]	495	delete(temp_att)
[176]	496
[190]	497	if (height_level(0) .NE. -1)then
	498	do te=0,dimz-1
[566]	499	data(:,te,:) = temp(start_time_step:end_time_step,\
	500	height_level(te),:)
[190]	501	end do
	502	end if
	503
[566]	504	data=data/(norm_y*norm_x)
[190]	505
[176]	506	do i=0,b-1
	507	if (isStrSubset( a(i),"zu_sp" ))then
	508	legend_label_z=legend_label_zu
[190]	509	if (height_level(0) .NE. -1)then
	510	z=zuh
	511	else
	512	z=zu
	513	end if
[176]	514	else
	515	if (isStrSubset( a(i),"zw_sp" ))then
[190]	516	legend_label_z=legend_label_zw
	517	if (height_level(0) .NE. -1)then
	518	z=zwh
	519	else
	520	z=zw
	521	end if
[176]	522	end if
	523	end if
	524	end do
[218]	525
[585]	526	if (check_vType) then
	527	min_y=new(dimz,double)
	528	max_y=new(dimz,double)
	529	else
	530	min_y=new(dimz,float)
	531	max_y=new(dimz,float)
	532	end if
[218]	533	min_x=new(dimz,double)
	534	max_x=new(dimz,double)
[585]	535
[218]	536	plot_h = new(dimz,graphic)
	537
[176]	538	if (isStrSubset(vNam(varn),"x"))then
[218]	539	x_axis = new((/dimz,dimx/),double)
	540	do q=0,dimz-1
	541	x_axis(q,:) = f_att->k_x
	542	x_axis = x_axis/norm_x
	543	end do
	544	if (norm_x .NE. 1.)then
[534]	545	res@tiXAxisString = "k~B~x~N~ ("+unit_x+")"
[190]	546	else
[218]	547	if (norm_height .EQ. 1)then
[534]	548	res@tiXAxisString = "k~B~x~N~ x z (1"
[218]	549	else
[534]	550	res@tiXAxisString = "k~B~x~N~ (1/m)"
[218]	551	end if
[190]	552	end if
[218]	553	dim_r=dimx
[176]	554	else
[218]	555	x_axis=new((/dimz,dimy/),double)
	556	do q=0,dimz-1
	557	x_axis(q,:) = f_att->k_y
	558	x_axis = x_axis/norm_x
	559	end do
	560	if (norm_x .NE. 1.)then
[534]	561	res@tiXAxisString = "k~B~x~N~ ("+unit_x+")"
[190]	562	else
[218]	563	if (norm_height .EQ. 1)then
[534]	564	res@tiXAxisString = "k~B~x~N~ x z (1)"
[218]	565	else
[534]	566	res@tiXAxisString = "k~B~x~N~ (1/m)"
[218]	567	end if
[190]	568	end if
[218]	569	dim_r=dimy
[176]	570	end if
	571
	572	if (sort .EQ. "time")
[218]	573	res@xyLineColors = color
	574	res@pmLegendDisplayMode = "Always"
	575	res@pmLegendSide = "Top"
	576	res@pmLegendParallelPosF = 1.2
	577	res@pmLegendOrthogonalPosF = -1.0
	578	res@pmLegendWidthF = 0.12
[566]	579	res@pmLegendHeightF = 0.04*\
	580	(end_time_step-start_time_step+1)
[190]	581	do p=dimz-1,0,1
[218]	582	if (log_y .EQ. 1)then
[190]	583	do q=0,dimt-1
[218]	584	do r=0,dim_r-1
	585	if (data(q,p,r) .EQ. 0)then
[190]	586	st=p+start_time_step
	587	print(" ")
[566]	588	print("'"+vNam(varn)+"("+st+","+q+","+r+")' is "+\
	589	"equal 0. Logarithmic scale for y-axis "+\
	590	"and height "+z(p)+" cannot be used")
[190]	591	print(" ")
	592	res@trYLog = False
	593	end if
	594	end do
[176]	595	end do
[190]	596	end if
[176]	597	res@gsnLeftString = vNam(varn)
[218]	598	res@gsnRightString = "Height = "+z(p)+"m"
[534]	599	res@tiYAxisString = "("+unit_y+")"
[218]	600	res@xyExplicitLegendLabels = legend_label
	601	if (norm_height .EQ. 1)then
	602	data(:,p,:)=data(:,p,:)*doubletofloat(z(p))
	603	x_axis(p,:) = x_axis(p,:)*z(p)
	604	end if
	605	res@trXMinF = min(x_axis(p,:))
	606	res@trXMaxF = max(x_axis(p,:))
	607	plot(n) = gsn_csm_xy(wks,x_axis(p,:),data(:,p,:),res)
[176]	608	n=n+1
	609	end do
	610	else
[190]	611	if (sort .EQ. "height")
	612	do p=0,dimt-1
[176]	613	do q=0,dimz-1
[218]	614	do r=0,dim_r-1
	615	if (data(p,q,r) .EQ. 0)then
[176]	616	st=p+start_time_step
	617	print(" ")
[566]	618	print("'"+vNam(varn)+"("+st+","+q+","+r+")' "+\
	619	"is equal 0. Logarithmic scale for y-axis "+\
	620	"and time "+legend_label(p)+" h cannot be used")
[176]	621	print(" ")
	622	res@trYLog = False
	623	end if
	624	end do
[218]	625	if (norm_height .EQ. 1 .AND. p .EQ. 0)then
[566]	626	data(p,q,:) = data(p,q,:)*\
	627	doubletofloat(legend_label_z(q))
	628	x_axis(q,:) = x_axis(q,:)*\
	629	doubletofloat(legend_label_z(q))
[218]	630	end if
	631	max_y(q)=max(data(p,q,:))
	632	min_y(q)=min(data(p,q,:))
	633	min_x(q)=min(x_axis(q,:))
[566]	634	max_x(q)=max(x_axis(q,:))
[218]	635	end do
	636	do q=0,dimz-1
	637	res@xyLineColor = color(q)
	638	if (dash .EQ. 1)then
	639	res@xyDashPattern = q
	640	end if
	641	if (q .EQ. 0)then
[566]	642	res@tiYAxisString = "("+unit_y+")"
[218]	643	res@gsnLeftString = vNam(varn)
	644	res@gsnRightString = "Time = "+legend_label(p)+"h"
	645	res@trXMinF = min(min_x)
	646	res@trXMaxF = max(max_x)
	647	res@trYMinF = min(min_y)
	648	res@trYMaxF = max(max_y)
	649
[566]	650	plot_h(q) = gsn_csm_xy(wks,x_axis(q,:),\
	651	data(p,q,:),res)
[218]	652
	653	lgres = True
	654	if (dash .EQ. 0)then
	655	lgres@lgMonoDashIndex = True
	656	else
	657	lgres@lgDashIndexes = ispan(0,dimz-1,1)
	658	end if
	659	if (black .EQ. 1)then
	660	lgres@lgMonoLineColors = True
	661	else
	662	lgres@lgLineColors = color
	663	end if
[566]	664	lgres@lgTitleString = "Height (m)"
[218]	665	lgres@lgLabelFont = "helvetica"
[566]	666	lgres@lgLabelFontHeightF = font_size_legend*6
	667	lgres@lgTitleFontHeightF = font_size
[218]	668	lgres@vpWidthF = 0.12
[566]	669	lgres@vpHeightF = font_size_legend*(dimz+3)
[218]	670
[566]	671	lbid = gsn_create_legend(wks,dimz,legend_label_z,lgres)
[218]	672
	673	amres = True
	674	amres@amParallelPosF = 0.75
	675	amres@amOrthogonalPosF = 0.15
	676	annoid1 = gsn_add_annotation(plot_h(q),lbid,amres)
	677	else
[566]	678	plot_h(q) = gsn_csm_xy(wks,x_axis(q,:),\
	679	data(p,q,:),res)
[218]	680	overlay(plot_h(0),plot_h(q))
	681	end if
	682	end do
	683	plot(n)=plot_h(0)
	684	n=n+1
[176]	685	end do
	686	end if
[190]	687	end if
[218]	688	delete(data)
	689	delete(temp)
[178]	690	delete(x_axis)
[218]	691	delete(min_x)
	692	delete(max_x)
	693	delete(min_y)
	694	delete(max_y)
	695	delete(plot_h)
[176]	696	end if
	697	end do
	698
	699	if (n .EQ. 0) then
	700	print(" ")
[190]	701	print("The variables 'var="+var+"' do not exist on your input file;")
	702	print("be sure to have one comma berfore and after each variable")
[176]	703	print(" ")
	704	exit
	705	end if
	706
	707	; ***************************************************
	708	; merge plots onto one page
	709	; ***************************************************
	710
	711	resP = True
	712	resP@txFont = "helvetica"
[218]	713	resP@txString = f_att@title
[176]	714	resP@txFuncCode = "~"
[218]	715	resP@txFontHeightF = 0.015
[176]	716
[534]	717	no_frames = 0
	718
[566]	719	if ((format_out .EQ. "eps" .OR. format_out .EQ. "epsi") .AND. \
	720	n .gt. no_rows*no_columns) then
[183]	721	gsn_panel(wks,plot,(/n,1/),resP)
[250]	722	print(" ")
	723	print("Outputs to .eps or .epsi have only one frame")
	724	print(" ")
[176]	725	else
[218]	726	do i = 0,n-1, no_rows*no_columns
	727	if( (i+no_rows*no_columns) .gt. (n-1)) then
	728	gsn_panel(wks,plot(i:n-1),(/no_rows,no_columns/),resP)
[534]	729	no_frames = no_frames + 1
[176]	730	else
[566]	731	gsn_panel(wks,plot(i:i+no_rows*no_columns-1),\
	732	(/no_rows,no_columns/),resP)
[534]	733	no_frames = no_frames + 1
[176]	734	end if
	735	end do
	736	end if
	737
[532]	738	if (format_out .EQ. "png" ) then
	739	png_output = new((/no_frames/), string)
	740	j = 0
	741	do i=0, no_frames-1
	742	j = i + 1
	743	if (j .LE. 9) then
	744	png_output(i) = file_out+".00000"+j+".png"
	745	end if
	746	if (j .GT. 9 .AND. j .LE. 99) then
	747	png_output(i) = file_out+".0000"+j+".png"
	748	end if
	749	if (j .GT. 99 .AND. j .LE. 999) then
	750	png_output(i) = file_out+".000"+j+".png"
	751	end if
	752	if (j .GT. 999) then
	753	png_output(i) = file_out+".00"+j+".png"
	754	end if
	755
	756	;using imagemagick's convert for reducing the white
	757	;space around the plot
	758	cmd = "convert -geometry 1000x1000 -density 300 -trim " + \
	759	png_output(i) + " " + png_output(i)
	760	system(cmd)
	761	end do
	762
	763	print(" ")
	764	print("Output to: "+ png_output)
	765	print(" ")
	766	else
	767	print(" ")
	768	print("Output to: " + file_out +"."+ format_out)
	769	print(" ")
	770	end if
[176]	771
[190]	772	end

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