[Bash] ps2png: convert ps to png format with high quality

previous solution using ImageMagicK works too, but may not produce the high quality expected.

#!/bin/bash # convert a single-page ps file into png format using gs # usage: #            ps2png psfile.ps # Note: #           1: need gs installed #           2: same name is used for the png file #           http://scriptdemo.blogspot.com if [ $# == 0 ]; then    sed -n '2,4p' `which ps2png`    exit else   for psname in $*   do      if [ -e $psname ]; then         pngname=`echo ${psname%%.*}`           gs -r300 -dTextAlphaBits=4 -sDEVICE=png16m -sOutputFile=${pngname}.png -dBATCH -dNOPAUSE ${psname}      else         echo "${psname} does not exist!"      fi   done fi

[Bash] ris2bib: convert RIS citation file to bibtex format

#!/bin/bash # convert ris format to bibtex format # usage: #          ris2bib.sh ris-file(s) #          www.scriptdemp.blogspot.ca getCTag() {    for cTag in $*    do       nl=`grep "^${cTag}" ${ris} | wc -l`       [ ${nl} -ne 0 ] && echo "${cTag}" && exit    done    echo "" } [ $# -eq 0 ] && sed -n '2,5p' `which ris2bib.sh` && exit for ris in $* do     if [ -e ${ris} ]; then        dos2unix ${ris}        auTag=`getCTag AU A1 A2`        tlTag=`getCTag T1 TI`        joTag=`getCTag JO JA`        yrTag=`getCTag PY Y1`        doTag=`getCTag M3 DO`        voTag="VL"; spTag="SP"; epTag="EP"; urTag="UR"; isTag="IS"        publisher=`grep "^PB\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/^\ //g'`        authorList0=`grep "^${auTag}\ " ${ris} | awk -F\- '{print $2"@"}'`        authorList=`echo ${authorList0} | sed -e 's/^\ //g' -e 's/\.\ /\./g' -e "s/\@$//" | sed -e 's/@/\ and\ /g'`        titleStr=`grep "^${tlTag}\ " ${ris} | cut -c7-`        jourStr=`grep "^${joTag}\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/^\ //g'`        volStr=`grep "^${voTag}\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/\ //g'`        SPStr=`grep "^${spTag}\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/\ //g'`        EPStr=`grep "^${epTag}\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/\ //g'`        if [ ${#EPStr} -ne 0 ]; then           pageStr="${SPStr}--${EPStr}"        else           pageStr=${SPStr}        fi        if [ ${#isTag} -ne 0 ]; then           isnStr=`grep "^${isTag}\ " ${ris} | cut -c7-`        fi        yearStr=`grep "^${yrTag}\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/\ //g' | cut -c-4`        if [ ${#doTag} -ne 0 ]; then           doiStr=`grep "^${doTag}\ " ${ris} | awk -F\- '{print $2}' | rev | awk -F\: '{print $1}' | rev | sed -e 's/^\ //g'`        fi        if [ ${#urTag} -ne 0 ]; then           urlStr=`grep "^${urTag}\ " ${ris} | awk -F\- '{print $2}' | sed -e 's/^\ //g'`        fi        #generate the key        mykey=`echo ${authorList} | awk -F\, '{print $1}'`        mykey="${mykey}${yearStr}"        titleKey=`echo ${titleStr} | awk '{print $1""$2}'`        mykey=`echo "${mykey}${titleKey}" | awk '{print tolower($0)}' | sed -e 's/\-//g'`        echo ""        echo @article{"${mykey},"        echo " author={${authorList}},"        echo " title = {{${titleStr}}},"        echo " journal = {${jourStr}},"        echo " year = {${yearStr}},"        echo " volume = {${volStr}},"        [ ${#isnStr} -ne 0 ] && echo " number = {"${isnStr}"},"        [ ${#doiStr} -ne 0 ] && echo " doi = {"${doiStr}"},"        [ ${#urlStr} -ne 0 ] && echo " url = {${urlStr}},"        if [ ${#publisher} -eq 0 ]; then           echo " pages = {${pageStr}}"        else           echo " pages = {${pageStr}},"           echo " publisher = {${publisher}}"        fi        echo " }"        unset auTag tlTag joTag voTag spTag epTag isTag    else       echo ""       echo "${ris} is not found!"       echo ""    fi done

png2eps: convert png image to eps with high resolution

#!/bin/bash # convert a png file into eps file # Usage: #           png2eps pngfile.png [-q JPGQuality -r FigResizePercentage] # e.g., #           png2eps aa.png bb.png -q 100 -r 60 # http://scriptdemo.blogspot.com if [ $# == 0 ]; then    sed -n '3,6p' png2eps    exit fi JPGQuality='100' FileResize='80' nfile=0 while test -n "$1" do   case "$1" in     -q|-quality)        JPGQuality=$2        shift        ;;     -r|-resize)        FileResize=$2        shift        ;;     *)        if [ -e $1 ]; then           pngfiles[$nfile]=$1           nfile=`expr $nfile + 1`        fi        shift        ;;   esac done for pngfile in ${pngfiles[*]} do   #convert to jpg file first to keep high resolution   jpgfile=${pngfile%%.*}.jpg   epsfile=${pngfile%%.*}.eps   eval "convert -quality ${JPGQuality} -resize ${FileResize}% ${pngfile} ${jpgfile}"   [ -e ${epsfile} ] && epsfile=tmp_${epsfile}   eval "convert ${jpgfile} eps3:${epsfile} && rm -f ${jpgfile}" done

Another solution is to use png2pnm and pnm2ps commands:

#!/bin/bash # convert a png file into eps file [using pngtopnm, pnmtops] # Usage: #           png2eps2 pngfile.png -scale reScale [-o outfile.eps] # e.g., #           png2eps2 aa.png -scale 0.3 -o aa.eps # http://scriptdemo.blogspot.com if [ $# == 0 ]; then    sed -n '3,6p' png2eps2    exit fi reScale='0.3' nfile=0 while test -n "$1" do   case "$1" in     -s|-r|-scale|-rescale)        reScale=$2        shift        ;;     -o|-output)        epsfile=$2        shift        ;;     *)        if [ -e $1 ]; then           pngfiles[$nfile]=$1           nfile=`expr $nfile + 1`        fi        shift        ;;   esac done for pngfile in ${pngfiles[*]} do   #convert to jpg file first and resize   [ ! -n "$epsfile" ] && epsfile=${pngfile%%.*}.eps   [ $nfile -gt 1 ] && epsfile=${pngfile%%.*}.eps   [ -e ${epsfile} ] && epsfile=tmp_${epsfile}   eval "pngtopnm ${pngfile} | pnmtops -noturn -nocenter -scale ${reScale} - >${epsfile}"   eps2eps -dLanguageLevel=3 ${epsfile} thisTmp${epsfile} && mv thisTmp${epsfile} ${epsfile} done

[Bash] ps2png

New version is here ps2png

#!/bin/bash # To convert a ps file into png format # Usage: #            ps2png [psfile.ps] # @ http://scriptdemo.blogspot.com if [ $# == 0 ]; then    for psname in *.ps    do          if [ -e $psname ]; then             pngname=`echo ${psname%%.*}`             convert $psname ${pngname}.png          else             echo "${psname} does not exist!"          fi    done else    for psname in $*    do         if [ -e $psname ]; then            pngname=`echo ${psname%%.*}`            convert $psname ${pngname}.png         else            echo "${psname} does not exist!"         fi    done fi