100 scatterPlotavg.timedata.threshstatisticpercentiletypesmoothsplinelinearcimod.lineThis defines the time period to average to. Can be “sec”, “min”, “hour”, “day”,“DSTday”, “week”, “month”, “quarter” or “year”. For much increased flexibilitya number can precede these options followed by a space. For example,a timeAverage of 2 months would be period = "2 month". See functiontimeAverage for further details on this. This option se useful as one method bywhich the number of points plotted is reduced i.e. by choosing a longer averagingtime.The data capture threshold to use ( when aggregating the data using avg.time.A value of zero means that all available data will be used in a particular periodregardless if of the number of values available. Conversely, a value of 100 willmean that all data will need to be present for the average to be calculated, else itis recorded as NA. Not used if avg.time = "default".The statistic to apply when aggregating the data; default is the mean. Can beone of "mean", "max", "min", "median", "frequency", "sd", "percentile". Notethat "sd" is the standard deviation and "frequency" is the number (frequency) ofvalid records in the period. "percentile" is the percentile level ( which can be setusing the "percentile" option - see below. Not used if avg.time = "default".The percentile level in % used when statistic = "percentile" and whenaggregating the data with avg.time. The default is 95. Not used if avg.time = "default".type determines how the data are split i.e. conditioned, and then plotted. Thedefault is will produce a single plot using the entire data. Type can be one ofthe built-in types as detailed in cutData e.g. “season”, “year”, “weekday” andso on. For example, type = "season" will produce four plots — one for eachseason.It is also possible to choose type as another variable in the data frame. If thatvariable is numeric, then the data will be split into four quantiles (if possible)and labelled accordingly. If type is an existing character or factor variable, thenthose categories/levels will be used directly. This offers great flexibility for understandingthe variation of different variables and how they depend on oneanother.Type can be up length two e.g. type = c("season", "weekday") will producea 2x2 plot split by season and day of the week. Note, when two types areprovided the first forms the columns and the second the rows.A smooth line is fitted to the data if TRUE; optionally with 95% confidence intervalsshown. For method = "level" a smooth surface will be fitted to binneddata.A smooth spline is fitted to the data if TRUE. This is particularly useful whenthere are fewer data points or when a connection line between a sequence ofpoints is required.A linear model is fitted to the data if TRUE; optionally with 95% confidenceintervals shown. The equation of the line and R2 value is also shown.Should the confidence intervals for the smooth/linear fit be shown?If TRUE three lines are added to the scatter plot to help inform model evaluation.The 1:1 line is solid and the 1:0.5 and 1:2 lines are dashed. Together these lineshelp show how close a group of points are to a 1:1 relationship and also show thepoints that are within a factor of two (FAC2). Also, for method = "scatter"
scatterPlot 101colsplot.typekeykey.titlekey.columnskey.positionstriplog.xlog.yx.incy.incy.relationx.relationref.xref.yk(the default) the scales are made to be isometric. In time, more comprehensivemodel evaluation statistics will be considered.Colours to be used for plotting. Options include “default”, “increment”, “heat”,“jet” and RColorBrewer colours — see the openair openColours functionfor more details. For user defined the user can supply a list of colour namesrecognised by R (type colours() to see the full list). An example would becols = c("yellow", "green", "blue")lattice plot type. Can be “p” (points — default), “l” (lines) or “b” (lines andpoints).Should a key be drawn? The default is TRUE.The title of the key (if used).Number of columns to be used in the key. With many pollutants a single columncan make to key too wide. The user can thus choose to use several columns bysetting columns to be less than the number of pollutants.Location where the scale key is to plotted. Allowed arguments currently include“top”, “right”, “bottom” and “left”.Should a strip be drawn? The default is TRUE.Should the x-axis appear on a log scale? The default is FALSE. If TRUE a wellformattedlog10 scale is used. This can be useful for checking linearity oncelogged.Should the y-axis appear on a log scale? The default is FALSE. If TRUE a wellformattedlog10 scale is used. This can be useful for checking linearity oncelogged.The x-interval to be used for binning data when method = "level".The y-interval to be used for binning data when method = "level".This determines how the y-axis scale is plotted. “same” ensures all panels usethe same scale and “free” will use panel-specfic scales. The latter is a usefulsetting when plotting data with very different values.This determines how the x-axis scale is plotted. “same” ensures all panels usethe same scale and “free” will use panel-specfic scales. The latter is a usefulsetting when plotting data with very different values.Add a vertical dashed reference line at this value.Add a horizontal dashed reference line at this value.Smoothing parameter supplied to gam for fitting a smooth surface when method = "level".trans trans is used when continuous = TRUE. Often for a good colour scale withskewed data it is a good idea to "compress" the scale. If TRUE a square roottransform is used, if FALSE a linear scale is used.mapauto.textShould a base map be drawn? This option is under development.Either TRUE (default) or FALSE. If TRUE titles and axis labels will automaticallytry and format pollutant names and units properly e.g. by subscripting the ‘2’ inNO2.