===========================
CDO  Climate Data Operators
===========================

Operator catalog:

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   Information
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      Info       info            File information
      Info       infov           File information
      Info       map             Print simple map
      Sinfo      sinfo           Short file information
      Sinfo      sinfov          Short file information
      Diff       diff            Differences of two files
      Diff       diffv           Differences of two files
      Ninfo      nyear           Number of years
      Ninfo      nmon            Number of months
      Ninfo      ndate           Number of dates
      Ninfo      ntime           Number of timesteps
      Ninfo      ncode           Number of codes
      Ninfo      nvar            Number of variables
      Ninfo      nlevel          Number of levels
      Showinfo   showyear        Show years
      Showinfo   showmon         Show months
      Showinfo   showdate        Show dates
      Showinfo   showtime        Show timesteps
      Showinfo   showcode        Show codes
      Showinfo   showvar         Show variable names
      Showinfo   showlevel       Show levels
      Filedes    vardes          Variable description
      Filedes    griddes         Grid description
      Filedes    vct             Vertical coordinate table
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   File operations
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      Copy       copy            Copy files
      Cat        cat             Concatenate files
      Merge      merge           Merge files
      Split      splitcode       Split codes
      Split      splitvar        Split variables
      Split      splitlevel      Split levels
      Split      splitgrid       Split grids
      Split      splitzaxis      Split zaxis
      Splittime  splithour       Split hours
      Splittime  splitday        Split days
      Splittime  splitmon        Split months
      Splittime  splitseas       Split seasons
      Splityear  splityear       Split years
      Splitrec   splitrec        Split records
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   Formatted I/O
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      Output     output          ASCII output
      Output     outputint       Integer output
      Output     outputsrv       SERVICE output
      Output     outputext       EXTRA output
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   Generation of variables
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      Vargen     const           Constant variable
      Vargen     random          Variable with random values
      Vardup     vardup          Duplicate variables
      Vardup     varmul          Multiply variables
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   Manipulating the header/field
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      Set        setpartab       Set parameter table
      Set        setcode         Set code
      Set        setvar          Set variable name
      Settime    setdate         Set date
      Settime    settime         Set time
      Settime    setday          Set day
      Settime    setmon          Set month
      Settime    setyear         Set year
      Settime    settunits       Set time units
      Settime    settaxis        Set time axis
      Settime    setreftime      Set reference time
      Settime    shifttime       Shift time steps
      Change     chcode          Change code
      Setgrid    setgrid         Set grid
      Setgrid    setgridtype     Set grid type
      Setgatt    setgatt         Set global attribute
      Setgatt    setgatts        Set global attributes
      Invert     invertlat       Invert latitude
      Invert     invertlon       Invert longitude
      Invert     invertlatdes    Invert latitude decription
      Invert     invertlondes    Invert longitude decription
      Invert     invertlatdata   Invert latitude data
      Invert     invertlondata   Invert longitude data
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   Selection
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      Select     selcode         Select codes
      Select     delcode         Delete codes
      Select     selvar          Select variables
      Select     delvar          Delete variables
      Select     sellevel        Select levels
      Select     selgrid         Select grids
      Select     selzaxis        Select zaxis
      Selrec     selrec          Select records
      Seltime    seltimestep     Select timesteps
      Seltime    seltime         Select times
      Seltime    selhour         Select hours
      Seltime    selday          Select days
      Seltime    selmon          Select months
      Seltime    selseas         Select seasons
      Seltime    selyear         Select years
      Seltime    seldate         Select dates
      Selbox     sellonlatbox    Select lon/lat box
      Selbox     selindexbox     Select index box
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   Missing values
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      Setmiss    setmissval      Set a new missing value
      Setmiss    setctomiss      Set constant to missing value
      Setmiss    setmisstoc      Set missing value to constant
      Setmiss    setrtomiss      Set range to missing value
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   Sorting
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      Sort       sortcode        Sort by code number
      Sort       sortvar         Sort by variable name
      Sort       sortlevel       Sort by level
      Timsort    timsort         Sort over the time
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   Arithmetic processor
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      Expr       expr            Evaluate expressions
      Expr       exprf           Evaluate expressions from script file
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   Arithmetic
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      Arithc     addc            Add by constant
      Arithc     subc            Subtract by constant
      Arithc     mulc            Multiply by constant
      Arithc     divc            Divide by constant
      Arith      add             Add two fields
      Arith      sub             Subtract two fields
      Arith      mul             Multiply two fields
      Arith      div             Divide two fields
      Arith      min             Minimum of two fields
      Arith      max             Maximum of two fields
      Ymonarith  ymonadd         Add multi-year monthly time averages
      Ymonarith  ymonsub         Subtract multi-year monthly time averages
      Ymonarith  ymonmul         Multiply multi-year monthly time averages
      Ymonarith  ymondiv         Divide multi-year monthly time averages
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   Mathematical functions
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      Math       sqr             Square
      Math       sqrt            Square root
      Math       exp             Exp
      Math       log             Logarithm
      Math       log10           Logarithm base 10
      Math       sin             Sine
      Math       cos             Cosine
      Math       tan             Tangent
      Math       asin            Arcus sine
      Math       acos            Arcus cosine
      Math       atan            Arcus tangent
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   Comparisons
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      Comp       eq              Equal
      Comp       ne              Not equal
      Comp       le              Less equal
      Comp       lt              Less then
      Comp       ge              Greater equal
      Comp       gt              Greater then
      Compc      eqc             Equal constant
      Compc      nec             Not equal constant
      Compc      lec             Less equal constant
      Compc      ltc             Less then constant
      Compc      gec             Greater equal constant
      Compc      gtc             Greater then constant
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   Conditions
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      Cond       ifthen          If then
      Cond       ifnotthen       If not then
      Condc      ifthenc         If then constant
      Condc      ifnotthenc      If not then constant
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   Statistical description of the data
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      Fldstat    fldmin          Field minimum
      Fldstat    fldmax          Field maximum
      Fldstat    fldsum          Field sum
      Fldstat    fldmean         Field mean
      Fldstat    fldavg          Field average
      Fldstat    fldstd          Field standard deviation
      Fldstat    fldvar          Field variance
      Zonstat    zonmin          Zonal minimum
      Zonstat    zonmax          Zonal maximum
      Zonstat    zonsum          Zonal sum
      Zonstat    zonmean         Zonal mean
      Zonstat    zonavg          Zonal average
      Zonstat    zonstd          Zonal standard deviation
      Zonstat    zonvar          Zonal variance
      Merstat    mermin          Meridional minimum
      Merstat    mermax          Meridional maximum
      Merstat    mersum          Meridional sum
      Merstat    mermean         Meridional mean
      Merstat    meravg          Meridional average
      Merstat    merstd          Meridional standard deviation
      Merstat    mervar          Meridional variance
      Vertstat   vertmin         Vertical minimum
      Vertstat   vertmax         Vertical maximum
      Vertstat   vertsum         Vertical sum
      Vertstat   vertmean        Vertical mean
      Vertstat   vertavg         Vertical average
      Vertstat   vertstd         Vertical standard deviation
      Timstat    timmin          Time minimum
      Timstat    timmax          Time maximum
      Timstat    timsum          Time sum
      Timstat    timmean         Time mean
      Timstat    timavg          Time average
      Timstat    timstd          Time standard deviation
      Timstat    hourmin         Hourly minimum
      Timstat    hourmax         Hourly maximum
      Timstat    hoursum         Hourly sum
      Timstat    hourmean        Hourly mean
      Timstat    houravg         Hourly average
      Timstat    hourstd         Hourly standard deviation
      Timstat    daymin          Daily minimum
      Timstat    daymax          Daily maximum
      Timstat    daysum          Daily sum
      Timstat    daymean         Daily mean
      Timstat    dayavg          Daily average
      Timstat    daystd          Daily standard deviation
      Timstat    monmin          Monthly minimum
      Timstat    monmax          Monthly maximum
      Timstat    monsum          Monthly sum
      Timstat    monmean         Monthly mean
      Timstat    monavg          Monthly average
      Timstat    monstd          Monthly standard deviation
      Timstat    yearmin         Yearly minimum
      Timstat    yearmax         Yearly maximum
      Timstat    yearsum         Yearly sum
      Timstat    yearmean        Yearly mean
      Timstat    yearavg         Yearly average
      Timstat    yearstd         Yearly standard deviation
      Seasstat   seasmin         Seasonally minimum
      Seasstat   seasmax         Seasonally maximum
      Seasstat   seassum         Seasonally sum
      Seasstat   seasmean        Seasonally mean
      Seasstat   seasavg         Seasonally average
      Seasstat   seasstd         Seasonally standard deviation
      Ydaystat   ydaymin         Multi-year daily minimum
      Ydaystat   ydaymax         Multi-year daily maximum
      Ydaystat   ydaymean        Multi-year daily mean
      Ydaystat   ydayavg         Multi-year daily average
      Ydaystat   ydaystd         Multi-year daily standard deviation
      Ymonstat   ymonmin         Multi-year monthly minimum
      Ymonstat   ymonmax         Multi-year monthly maximum
      Ymonstat   ymonmean        Multi-year monthly mean
      Ymonstat   ymonavg         Multi-year monthly average
      Ymonstat   ymonstd         Multi-year monthly standard deviation
      Yseasstat  yseasmin        Multi-year seasonally minimum
      Yseasstat  yseasmax        Multi-year seasonally maximum
      Yseasstat  yseasmean       Multi-year seasonally mean
      Yseasstat  yseasavg        Multi-year seasonally average
      Yseasstat  yseasstd        Multi-year seasonally standard deviation
      Runstat    runmin          Running minimum
      Runstat    runmax          Running maximum
      Runstat    runsum          Running sum
      Runstat    runmean         Running mean
      Runstat    runavg          Running average
      Runstat    runstd          Running standard deviation
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   Regression
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      Detrend    detrend         Detrend
      Trend      trend           Trend
      Subtrend   subtrend        Subtract trend
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   Interpolation
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      Remap      remapcon        Conservative remapping
      Remap      remapbil        Bilinear interpolation
      Remap      remapbic        Bicubic interpolation
      Remap      remapdis        Distance-weighted averaging
      Intgrid    interpolate     Interpolate
      Intgrid    intgrid         Grid interpolation
      Intgrid    intpoint        Point interpolation
      Vertint    ml2pl           Model to pressure level interpolation
      Vertint    ml2hl           Model to height level interpolation
      Inttime    inttime         Time interpolation
      Intyear    intyear         Year interpolation
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   Spectral transformation
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      Spectral   sp2gp           Spectral to gridpoint
      Spectral   gp2sp           Gridpoint to spectral
      Spectral   sp2sp           Spectral to spectral
      Spectral   spcut           Cut spectral wave number
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   Other
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      Gradsdes   gradsdes        GrADS data descriptor file
      Mastrfu    mastrfu         Mass stream function
