plotSave {WebAnalytics}

Save a plot to a file with a generated name

Description

These two functions save a base graphics plot function call or a ggplot object to a file with a generated name in the format (eps or jpg) specified and return the generated file name.

Usage

plotSaveGG(thePlot, fileID, fileType = "jpg") 
plotSave(thePlot,
      fileID, 
      fileType = "jpg", 
      imageQuality=90, 
      imageDefaultWidth=600, 
      imageDefaultHeight=400) 

Arguments

thePlot

Either a base graphics plot function call or a ggplot plot object. The base graphics function call is valuated within the function, not at the time of the call (A peculiarity of the R language)

fileID

A unique ID for the file. This ID is used to generate a hash which is used as the file name. The ID may contain any characters and can, for example be a URL which would not otherwise be a valid filename.

fileType

Either eps or jpg depending on the file format required. EPS files grow significantly as the number of data points grows. For very large data sets jpg is preferable.

imageQuality

The percent quality for JPG file construction. EPS files are metafiles and do not have a percent quality.

imageDefaultWidth

The width in pixels of the image

imageDefaultHeight

The height in pixels of the image

Value

The function returns the generated file name after creating the file.

Author(s)

Greg Hunt <[e-mail]>

Examples

logFileName = logFileNamesGetLast(dataDirectory=datd, 
  directoryNames=c(".", "."), 
  fileNamePattern="*[.]log")[[1]]

cols = logFileFieldsGetIIS(logFileName)

logdf = logFileRead(logFileName, columnList=cols, 
            logTimeZone = "", timeFormat = "")

plotSaveGG(plotErrorRateByHour(logdf),"xxx", "eps")
plotSave(plotResponseTimeScatter(logdf$ts, logdf$elapsed), "yyy", "jpg")