#! /bin/bash
# invoke gnuplot to compare crop output from WEPS generated runs.

# invocation: allcrop [Col_num-1 Col_num-2 ... Colnum-# file-1] [Col_num-1 Col_num-2 ... Colnum-# file-2] ... [Col_num-1 Col_num-2 ... Colnum-# file-#]

# set up column and title correspondence
cropnamecols="340-369"
mincol=5
maxcol=46
calcol=47
coltitle[5]=`echo "5) Heat Unit Index"`
coltitle[6]=`echo "6) Standing Stem Mass (kg/m^2)"`
coltitle[7]=`echo "7) Standing Leaf Mass (kg/m^2)"`
coltitle[8]=`echo "8) Standing Store Mass (kg/m^2)"`
coltitle[9]=`echo "9) Flat Stem Mass (kg/m^2)"`
coltitle[10]=`echo "10) Flat Leaf Mass (kg/m^2)"`
coltitle[11]=`echo "11) Flat Store Mass (kg/m^2)"`
coltitle[12]=`echo "12) Root Store Mass (kg/m^2)"`
coltitle[13]=`echo "13) Root Fiber Mass (kg/m^2)"`
coltitle[14]=`echo "14) Below Ground Stem Mass (kg/m^2)"`
coltitle[15]=`echo "15) Total Leaf Mass (kg/m^2)"`
coltitle[16]=`echo "16) Total Stem Mass (kg/m^2)"`
coltitle[17]=`echo "17) Plant Height (meters)"`
coltitle[18]=`echo "18) Number of Stems"`
coltitle[19]=`echo "19) Whole field area based Leaf Area Index (traditional)"`
coltitle[20]=`echo "20) Effective Leaf Area Index"`
coltitle[21]=`echo "21) Root Depth (meters)"`
coltitle[22]=`echo "22) Reproductive Mass Grain Fraction"`
coltitle[23]=`echo "23) Temperature Stress Factor"`
coltitle[24]=`echo "24) Water Stress Factor"`
coltitle[25]=`echo "25) Frost Damage Factor"`
coltitle[26]=`echo "26) Fraction Loss of Live Leaf Mass (scenescence)"`
coltitle[27]=`echo "27) Fraction Loss of Total Leaf Mass (weathering)"`
coltitle[28]=`echo "28) Photosynthetically Active Radiation (MJ/m2)"`
coltitle[29]=`echo "29) Intercepted Photosynthetically Active Radiation (MJ/m2)"`
coltitle[30]=`echo "30) Increment in Potential Dry Matter (kg/plant)"`
coltitle[31]=`echo "31) Fibrous Root Partitioning Ratio"`
coltitle[32]=`echo "32) Stem Partitioning Ratio"`
coltitle[33]=`echo "33) Leaf Partitioning Ratio"`
coltitle[34]=`echo "34) Reproductive Partitioning Ratio"`
coltitle[35]=`echo "35) Stem Mass Fraction Allocated To Standing Stems (Rem. Goes Flat)"`
coltitle[36]=`echo "36) Plant canopy diameter (or reach)(m/plant)"`
coltitle[37]=`echo "37) Plant canopy coverage area (m^2/plant)"`
coltitle[38]=`echo "38) Plant canopy diameter fraction (plant diameter / max diameter)"`
coltitle[39]=`echo "39) Plant canopy cover (light extinction) (m^2/m^2)"`
coltitle[40]=`echo "40) Heat Unit Delay factor (1-no delay, 0-full delay)"`
coltitle[41]=`echo "41) Freeze Hardening Index (0-none, 2-stage 2 complete)"`
coltitle[42]=`echo "42) Stem area index (m^2/m^2)"`
coltitle[43]=`echo "43) Representative stem diameter (m)"`
coltitle[44]=`echo "44) Crop Regrowth Indicatior flag (-1 to 6)"`
coltitle[45]=`echo "45) Live Leaf Mass Fraction"`
coltitle[46]=`echo "46) Cumulative Warm Days"`

# short column titles
shortcoltitle[5]=`echo "HUI"`
shortcoltitle[6]=`echo "S Stem"`
shortcoltitle[7]=`echo "S Leaf"`
shortcoltitle[8]=`echo "S Store"`
shortcoltitle[9]=`echo "F Stem"`
shortcoltitle[10]=`echo "F Leaf"`
shortcoltitle[11]=`echo "F Store"`
shortcoltitle[12]=`echo "R Store"`
shortcoltitle[13]=`echo "R Fiber"`
shortcoltitle[14]=`echo "BG Stem"`
shortcoltitle[15]=`echo "T Leaf"`
shortcoltitle[16]=`echo "T Stem"`
shortcoltitle[17]=`echo "Height"`
shortcoltitle[18]=`echo "# Stems"`
shortcoltitle[19]=`echo "LAI"`
shortcoltitle[20]=`echo "Eff LAI"`
shortcoltitle[21]=`echo "R Depth"`
shortcoltitle[22]=`echo "GRF"`
shortcoltitle[23]=`echo "T Stress"`
shortcoltitle[24]=`echo "W Stress"`
shortcoltitle[25]=`echo "F Damage"`
shortcoltitle[26]=`echo "Senes"`
shortcoltitle[27]=`echo "Weath"`
shortcoltitle[28]=`echo "PAR"`
shortcoltitle[29]=`echo "I PAR"`
shortcoltitle[30]=`echo "iDM"`
shortcoltitle[31]=`echo "Root P"`
shortcoltitle[32]=`echo "Stem P"`
shortcoltitle[33]=`echo "Leaf P"`
shortcoltitle[34]=`echo "Repr P"`
shortcoltitle[35]=`echo "Stand F"`
shortcoltitle[36]=`echo "Reach"`
shortcoltitle[37]=`echo "Coverage"`
shortcoltitle[38]=`echo "Reach R"`
shortcoltitle[39]=`echo "Can Cover"`
shortcoltitle[40]=`echo "HU Delay"`
shortcoltitle[41]=`echo "Fr Hard"`
shortcoltitle[42]=`echo "SAI"`
shortcoltitle[43]=`echo "Rep Stem D"`
shortcoltitle[44]=`echo "Regrowth"`
shortcoltitle[45]=`echo "LiveLeaf"`
shortcoltitle[46]=`echo "Warm Days"`

# set up column groupings
tgroups=15
colgroupnum[5]=1
colgroupnum[6]=2
colgroupnum[7]=2
colgroupnum[8]=2
colgroupnum[9]=2
colgroupnum[10]=2
colgroupnum[11]=2
colgroupnum[12]=2
colgroupnum[13]=2
colgroupnum[14]=2
colgroupnum[15]=2
colgroupnum[16]=2
colgroupnum[17]=3
colgroupnum[18]=4
colgroupnum[19]=5
colgroupnum[20]=5
colgroupnum[21]=3
colgroupnum[22]=1
colgroupnum[23]=1
colgroupnum[24]=1
colgroupnum[25]=1
colgroupnum[26]=1
colgroupnum[27]=1
colgroupnum[28]=6
colgroupnum[29]=6
colgroupnum[30]=7
colgroupnum[31]=8
colgroupnum[32]=8
colgroupnum[33]=8
colgroupnum[34]=8
colgroupnum[35]=8
colgroupnum[36]=9
colgroupnum[37]=10
colgroupnum[38]=1
colgroupnum[39]=1
colgroupnum[40]=1
colgroupnum[41]=11
colgroupnum[42]=12
colgroupnum[43]=13
colgroupnum[44]=14
colgroupnum[45]=15

# group y axis labels
grouplabel[1]=`echo "Fraction (0-1)"`
grouplabel[2]=`echo "Mass (kg/m^2)"`
grouplabel[3]=`echo "meters"`
grouplabel[4]=`echo "count per m^2"`
grouplabel[5]=`echo "m^2 leaf per m^2"`
grouplabel[6]=`echo "Radiation (MJ/m^2)"`
grouplabel[7]=`echo "kg per plant"`
grouplabel[8]=`echo "Partitioning Ratio"`
grouplabel[9]=`echo "meters per plant"`
grouplabel[10]=`echo "m^2 per plant"`
grouplabel[11]=`echo "Stage (0-2)"`
grouplabel[12]=`echo "m^2 per m^2"`
grouplabel[13]=`echo "meters"`
grouplabel[14]=`echo "Cause (-1 to 6)"`
grouplabel[15]=`echo "Days"`

# grab and count command arguments
let ncmdarg=0
for ncmd in $*
do
    let ncmdarg=ncmdarg+1
    cmdarg[ncmdarg]="$ncmd"
    # echo "Command argument $ncmdarg = ${cmdarg[ncmdarg]}"
done

# check command argument count, zero means none
if [[ ncmdarg -eq 0 ]]
then
    echo 'invocation: allcrop [Col_num-1 Col_num-2 ... Colnum-# file-1] [Col_num-1 Col_num-2 ... Colnum-# file-2] ... [Col_num-1 Col_num-2 ... Colnum-# file-#]'
    echo 'Valid Column Numbers are:'
    for num in $( seq $mincol $maxcol )
    do
        echo ${coltitle[num]}
    done
    exit
fi

# parse command arguments checking for numbers and when not a number checking for a valid file name
# initialize total number of columns parsed
tcols=0
# initialize total number of valid file names parsed (must assume one when column numbers preceed file names)
tfiles=1
# initialize column count for first file name
tcolfile[tfiles]=0
for ncmd in $( seq 1 $ncmdarg )
do
    # test if it is an integer number
    echo "${cmdarg[ncmd]}" | grep [^0-9] > /dev/null 2>&1
    if [ "$?" -eq "0" ]
    then
        # not a column number, check for file name
        if [ -e "${cmdarg[ncmd]}" ]
        then
            # valid file name, check for preceeding columns
            if [[ tcolfile[tfiles] -gt 0 ]]
            then
                # columns are listed in front of this name
                # back fill column file name pairings
                for ncol in $( seq 1 ${tcolfile[tfiles]} )
                do
                    # write file name
                    let index=(tcols-tcolfile[tfiles])+ncol
                    filename[index]="${cmdarg[ncmd]}"
                done
                # add file name to unique file names list
                ufilename[tfiles]="${cmdarg[ncmd]}"
                # Increment file number counter
                let tfiles+=1
            fi

            # find number of index blocks in this file
            linecount=`wc -l < ${ufilename[tfiles-1]}`
            lineswithnumbers=`grep -c '\.' < ${ufilename[tfiles-1]}`
            let fileindex=(linecount-lineswithnumbers-1)/2
            #echo "fileindex = ${fileindex}"

            # check to use minimum of all files
            numindex=`echo "$fileindex $numindex" | stats min`
            #echo "numindex now equal to $numindex"
        else
            # not a valid file name, show error message and exit
            echo \'"${cmdarg[ncmd]}"\' is not valid file name.
            exit
        fi
    else
        # it is an integer number, check for valid column number
        if [[ ${cmdarg[ncmd]} -lt $mincol ]]
        then
            echo \'"${cmdarg[ncmd]}"\' is a Bad Column Number
            echo 'invocation: allcrop [Col_num-1 Col_num-2 ... Colnum-# file-1] [Col_num-1 Col_num-2 ... Colnum-# file-2] ... [Col_num-1 Col_num-2 ... Colnum-# file-#]'
            echo 'Valid Column Numbers are:'
            for num in $( seq $mincol $maxcol )
            do
                echo ${coltitle[num]}
            done
            exit
        elif [[ ${cmdarg[ncmd]} -gt $maxcol ]]
        then
            echo \'"${cmdarg[ncmd]}"\' is a Bad Column Number
            echo 'invocation: allcrop [Col_num-1 Col_num-2 ... Colnum-# file-1] [Col_num-1 Col_num-2 ... Colnum-# file-2] ... [Col_num-1 Col_num-2 ... Colnum-# file-#]'
            echo 'Valid Column Numbers are:'
            for num in $( seq $mincol $maxcol )
            do
                echo ${coltitle[num]}
            done
            exit
        fi

        # valid column number, add into colum number array and increment indexes
        let tcols+=1
        let tcolfile[tfiles]+=1
        colnum[tcols]="${cmdarg[ncmd]}"
        # set column group number
        colgroup[tcols]=${colgroupnum[${colnum[tcols]}]}
        # set column file number
        colfilenum[tcols]=${tfiles}
    fi
done

# screen for terminating valid file name
if [ ! -e "${filename[tcols]}" ]
then
    echo "No terminating file name."
    echo 'invocation: allcrop [Col_num-1 Col_num-2 ... Colnum-# file-1] [Col_num-1 Col_num-2 ... Colnum-# file-2] ... [Col_num-1 Col_num-2 ... Colnum-# file-#]'
fi

# set tfiles to the correct count
let tfiles-=1

# echo the resulting arrays of column numbers and file names
# echo "The input command line results in the following columns and file names:"
# for num in $( seq 1 ${tcols} )
# do
#     echo "${colnum[num]}  ${colgroup[num]}  ${filename[num]}"
# done
# exit

# set up graph to column group correspondence
# sort group list (result is zero reference array)
colgroupsort=(`echo ${colgroup[@]} | transpose | sort | transpose`)

# total number of column groups to be plotted
tgroups=1
# list of groups represented
groupnum[1]=${colgroupsort[0]}
let tindex=tcols-1
for num in $( seq 1 ${tindex} )
do
    let index=num-1
    if [[ ${colgroupsort[num]} -ne ${colgroupsort[index]} ]]
    then
        let tgroups+=1
        groupnum[tgroups]=${colgroupsort[num]}
    fi
done

# show groups
# echo "unique group numbers"
# echo ${groupnum[@]}
# exit

#### BEGIN FUNCTION ####
# define function to find the number of crops planted in a rotation and
# the names of the crops listed in order.
crops_number_names ()
{
    # this function populates numcrops[] and cropname[] arrays
    # the following must be defined for it to work:
    #     cropnamecols, ufilename[num], num
    # it creates and deletes a file named "temp"

    # extract crop name for every growth period in order
    cat ${ufilename[num]} | dm "if x4=1 then INPUT else SKIP" | cut -c ${cropnamecols} > temp 
    # check for crop name pattern
    numcrops[num]=1
    read_index=0
    check_index=0
    while read record
    do
        #echo "test: ${record}"
        let "read_index = read_index + 1"
        # assign next crop name
        cropname[read_index]="${record}"
    done < temp

    # limit number of matches required for efficiency
    let "match_count = 0"
    let "match_limit = 10"

    let "test_index = 1"
    while [ "${test_index}" -lt "${read_index}" ]
    do
        let "test_index = test_index + 1"

        # loop through
        let "match_index = 0"
        while [ "${match_index}" -lt "${numcrops[num]}" ]
        do
            let "match_index = match_index + 1"

            #echo "test_index: ${test_index}"
            #echo "match_index: ${match_index}"
            #echo "${cropname[test_index]}:end"
            #echo "${cropname[match_index]}:end"

            # check for name match
            if [ "${cropname[match_index]}" = "${cropname[test_index]}" ]
            then
                # matches
                #echo "Match"
                if [ "${match_index}" -lt "${numcrops[num]}" ]
                then
                    # still in inner loop, so advance to next test element
                    let "test_index = test_index + 1"
                else
                    # complete match, increment count
                    let "match_count = match_count + 1"
                fi
            else
                #echo "No Match"
                # does not match, increase numcrops count
                let "numcrops[num] = test_index"
                # set this to exit loop, atart matching again
                let "match_index = numcrops[num]"
                # reset match count
                let "match_count = 0"
            fi
        done

        #echo "match_count: ${match_count}"

        # terminate testing if pattern matches 10 times
        if [ "${match_count}" -ge "${match_limit}" ]
        then
            let "test_index = read_index"
        fi

    done

    #echo "Found ${numcrops[num]} crops in sequence"

    rm temp 
}
#### END FUNCTION ####

# Find the number of crops in each rotation (first file sets standard) and the list of crop names (from the last file)
let "num = 1"
# call function
crops_number_names
for num in $( seq 2 ${tfiles} )
do
    # call function
    crops_number_names
    #echo "${ufilename[num]} has ${numcrops[num]} unique crop(s)"
    if [[ numcrops[num] -ne numcrops[1] ]]
    then
        # for multiple file plots, the number of unique crops must be equal
        echo "Different number of unique crops for two files"
        echo "Check and try again"
    fi
done

# Find maximum values for each unique crop year
# all files have the same number of crop years
for idx in $( seq 1 ${numcrops[1]} )
do
    for num in $( seq 1 ${tfiles} )
    do
        echo "Crop name: ${cropname[idx]} :end"

        # Find maximum column value for x axis "day after planting" column 4 for just the lines containing the crop name
        cropmaxdap[idx]=`grep "${cropname[idx]}" < ${ufilename[num]} | dm "if x4>0 then x4 else SKIP" | stats max`
        echo "cropmaxdap: ${cropmaxdap[idx]}"
        # set maximum across all files
        afcropmaxdap[idx]=`echo "${cropmaxdap[idx]} ${afcropmaxdap[idx]}" | stats max`
        echo "afcropmaxdap: ${afcropmaxdap[idx]}"

#        # find maximum for each stack for just the lines containing the crop name
#        for idy in $(seq 1 $tcols)
#        do
#            if [[ colfilenum[idy] -eq ${num} ]]
#            then
#                # add column number to dm string
#                if [[ colfileser[idy] -eq 1 ]]
#                then
#                    summedcol="x${colnum[idy]}"
#                else
#                    summedcol="${summedcol}+x${colnum[idy]}"
#                fi
#            fi
#        done
#        stackmaxval[idx]=`grep "${cropname[idx]}" < ${ufilename[num]} | dm "if x1>0 then ${summedcol} else SKIP" | stats max`
#        echo "Stack ${summedcol} maximum is ${stackmaxval[idx]}"
#        # set maximum across all files
#        afstackmaxval[idx]=`echo "${stackmaxval[idx]} ${afstackmaxval[idx]}" | stats max`
#        echo "afstackmaxval: ${afstackmaxval[idx]}"

    done
done

## find maximum column value for x axis "day after planting" column 4 for all input files
#for num in $( seq 1 ${tfiles} )
#do
#    # Check for maximum days after planting for one file
#    filemaxdap=`dm "if x4>0 then x4 else SKIP" < ${filename[num]} | stats max`
#    # Check for maximum days after planting for all file
#    allmaxdap=`echo "$filemaxdap $allmaxdap" | stats max`
#    echo "maximum day after planting now equal to $allmaxdap"
#done

# find maximum column value for each column and assign that to the maximum for the group
for num in $( seq 1 $tcols )
do
    echo -n " Find maximum value: column ${colnum[num]} in ${filename[num]} : "

    # find selected column maximum value for this file
    filemaxval=`dm "if x${colnum[num]}>0 then x${colnum[num]} else SKIP" < ${filename[num]} | stats max`
    echo "${filemaxval}"

    # check for maximum for this column group for all files
    groupmaxval[${colgroup[num]}]=`echo "$filemaxval ${groupmaxval[${colgroup[num]}]}" | stats max`
    echo "groupmaxval(${colgroup[num]}) now equal to ${groupmaxval[${colgroup[num]}]}"
done

# rather than loop within gnuplot, create specific plot lines
# for each year so these parameters can be added to the 
# title of the graph.

# associate graph title name with column number specified
titlebase=${coltitle[${colnum[1]}]}

# create text for graph title, using file names
graphtitle="Files: "
for num in $( seq 1 ${tfiles} )
do
    graphtitle=`echo "${graphtitle} ${num}) ${ufilename[num]} "`
done

# Set up plot sizes for multiple plots (ie. groups)
if [[ $tgroups -gt 1 ]]
then
    # plot sizes for each group
    psizebase=$( echo "scale=4; 0.9/${tgroups}" | bc -l )
    for num in $( seq 1 $tgroups )
    do
        # create coordinates
        # y size for plot (x is 1.0)
        if [[ $num -eq 1 ]]
        then
            # increase the size of the first plot
            psize[num]=$( echo "scale=4; ${psizebase}+0.05" | bc -l )
            # place plots from the top down in the order specified
            porigin[num]=$( echo "scale=4; 0.05+($tgroups-$num)*${psizebase}" | bc -l )
        elif [[ $num -eq $tgroups ]]
        then
            # increase the size of the last plot
            psize[num]=$( echo "scale=4; ${psizebase}+0.05" | bc -l )
            porigin[num]=0
        else
            psize[num]=${psizebase}
            porigin[num]=$( echo "scale=4; 0.05+($tgroups-$num)*${psizebase}" | bc -l )
        fi
    done
fi

# write single instance lines top plot file

#--- start pdf ---
echo "set terminal pdf" > temp.plt
echo "set output 'allcrop.pdf'" >> temp.plt
view_pause=0
#--- end pdf ---

#--- start postscript ---
#echo "set terminal postscript" > temp.plt
#echo "set output 'allcrop.eps'" >> temp.plt
#view_pause=0
#--- end postscript ---

#--- start emf ---
# create temporary directory for files if needed
#tempdir="htemp"
#mkdir -p ${tempdir}
## clear any files
#rm ${tempdir}/*.emf
#echo "set terminal emf monochrome dashed" > temp.plt
#view_pause=0
#echo "set line style 1 lt 1 lw 1" >> temp.plt
#echo "set line style 2 lt 2 lw 1" >> temp.plt
#echo "set line style 3 lt 3 lw 1" >> temp.plt
#echo "set line style 4 lt 4 lw 1" >> temp.plt
#echo "set line style 5 lt 5 lw 1" >> temp.plt
#echo "set line style 6 lt 1 lw 3" >> temp.plt
#echo "set line style 7 lt 2 lw 3" >> temp.plt
#echo "set line style 8 lt 3 lw 3" >> temp.plt
#echo "set line style 9 lt 4 lw 3" >> temp.plt
#echo "set line style 10 lt 5 lw 3" >> temp.plt
#echo "set line style 11 lt 1 lw 5" >> temp.plt
#--- end emf ---

#--- start screen ---
#view_pause=-1
#echo "" > temp.plt
#--- end screen ---

# set legend location
echo "set key left top" >> temp.plt

## set so that all graphs use same total days
#echo "set xrange [0:${allmaxdap}]" >> temp.plt

for year in $(seq $numindex)
do
#    # --- emf output files ---
#    echo "set output '${tempdir}/${year}.emf'" >> temp.plt

    # set the crop that is growing
    cropnumyr=$( echo "(${year} - 1) % ${numcrops[1]}" | bc )
    let cropnumyr++
    # echo "${cropnumyr}"

    # show whats happening on the command line
    echo "crop year = ${year}, crop name = ${cropname[cropnumyr]}"

    # set so that graphs use same total days and maximum values for that crop
    echo "set xrange [0:${afcropmaxdap[cropnumyr]}]" >> temp.plt
#    echo "set xrange [0:60]" >> temp.plt

    # create graph title line
    echo "set title \"Crop Yr ${year}, Crop: ${cropname[cropnumyr]}\n${graphtitle}\"" >> temp.plt

    # set up single or multiple plot windows
    if [[ $tgroups -gt 1 ]]
    then
        echo "multiple plots"
        echo "set lmargin at screen 0.12" >> temp.plt
        echo "set size 1.0, 1.0" >> temp.plt
        echo "set origin 0.0, 0.0" >> temp.plt
        echo "set multiplot" >> temp.plt
    fi

    # create plot commands for each group
    for idx in $( seq 1 $tgroups )
    do
        # only print title once, above first graph
        if [[ $idx -gt 1 ]]
        then
            echo "set title ''" >> temp.plt
        fi

        # remove x axis from all but last graph
        if [[ $idx -lt $tgroups ]]
        then
            # remove x axis labels
            echo "set format x ''" >> temp.plt
            echo "set xlabel ''" >> temp.plt
        else
            # remove x axis labels
            echo "set format x '% g'" >> temp.plt
            echo "set xlabel 'Days After Planting'" >> temp.plt
        fi

        # individual sizes for multiplots
        if [[ $tgroups -gt 1 ]]
        then
            # set plot size
            echo "set size 1.0, ${psize[idx]}" >> temp.plt
            echo "set origin 0.0, ${porigin[idx]}" >> temp.plt
        fi

        # set axis scales, labels
        echo "set yrange [0:${groupmaxval[${groupnum[idx]}]}]" >> temp.plt
        echo "set ylabel '${grouplabel[${groupnum[idx]}]}'" >> temp.plt

        # create plot lines for each column and file in this group
        index=0
        for num in $(seq 1 $tcols)
        do
            if [[ colgroup[num] -eq groupnum[idx] ]]
            then
                let index+=1
                let yearm=year-1
                plotline[index]="'${filename[num]}' index ${yearm} using 4:${colnum[num]} with lines title '${colfilenum[num]}) ${shortcoltitle[${colnum[num]}]}', \\"
            fi
        done

        # add plot command to first plotline
        plotline[1]=`echo "${plotline[1]}" | sed -e 's/^.*/plot &/'`

        # strip last plotline of 3 extra characters
        plotline[index]=`echo "${plotline[index]}" | sed -e 's/...$//'`

        # write out plot lines to file
        for num in $(seq 1 $index)
        do
            echo ${plotline[num]} >> temp.plt
        done
    done

    # check multiple plots
    if [[ $tgroups -gt 1 ]]
    then
        # this command necessary to display all plots on some terminals
        echo "unset multiplot" >> temp.plt
    fi

    echo "pause ${view_pause}" >> temp.plt

done

gnuplot temp.plt

#rm temp.plt

exit