Do not want scientific notation on plot axis

Question

I regularly do all kinds of scatter plots in R using the plot command   Sometimes both  sometimes only one of the plot axes is labelled in scientific notation  I do not understand when R makes the decision to switch to scientific notation  Surprisingly  it often prints numbers which no sane human would write in scientific notation when labelling a plot  for example it labels 5 as 5e 00  Let s say you have a log-axis going up to 1000  scientific notation is unjustified with such  small  numbers   I would like to suppress that behaviour  I always want R to display integer values   Is this possible   I tried options scipen 10  but then it starts writing 5 0 instead of 5  while on the other axis 5 is still 5 etc  How can I have pure integer values in my R plots   I am using R 2 12 1 on Windows 7

User · Answer

Normally setting axis limit   max of your variable is enough  a  lt - c 0 1000000  b  lt - c 0 1000000   plot a  b  ylim   c 0  max b

User · Answer

Use options scipen 5  or some other high enough number   The scipen option determines how likely R is to switch to scientific notation  the higher the value the less likely it is to switch   Set the option before making your plot  if it still has scientific notation  set it to a higher number

User · Answer

You can use the axis   command for that  eg    x  lt - 1 100000 y  lt - 1 100000 marks  lt - c 0 20000 40000 60000 80000 100000  plot x y log  x  yaxt  n  type  l   axis 2 at marks labels marks    gives      EDIT   if you want to have all of them in the same format  you can use the solution of  Richie to get them    x  lt - 1 100000 y  lt - 1 100000 format y scientific FALSE  plot x y log  x  yaxt  n  type  l   axis 2 at marks labels format marks scientific FALSE

User · Answer

Try this   I purposely broke out various parts so you can move things around   library sfsmisc    Generate the data x  lt - 1 100000 y  lt - 1 100000   Setup the plot area par pty  m   plt c 0 1  1  0 1  1   omd c 0 1 0 9 0 1 0 9     Plot a blank graph without completing the x or y axis plot x  y  type    n   xaxt    n   yaxt  n   xlab     ylab     log    x   col  blue   mtext side 3  text  Test Plot   line 1 2  cex 1 5    Complete the x axis eaxis 1  padj -0 5  cex axis 0 8  mtext side 1  text  x   line 2 5    Complete the y axis and add the grid aty  lt - seq par  yaxp   1   par  yaxp   2    par  yaxp   2  - par  yaxp   1   par  yaxp   3   axis 2  at aty  labels format aty  scientific FALSE   hadj 0 9  cex axis 0 8  las 2  mtext side 2  text  y   line 4 5  grid     Add the line last so it will be on top of the grid lines x  y  col  blue

User · Answer

You can use format or formatC to  ahem  format your axis labels   For whole numbers  try  x  lt - 10    1 10  format x  scientific   FALSE  formatC x  digits   0  format    f     If the numbers are convertable to actual integers  i e   not too big   you can also use  formatC x  format    d     How you get the labels onto your axis depends upon the plotting system that you are using

User · Answer

You could try lattice   require lattice  x  lt - 1 100000 y  lt - 1 100000 xyplot y x  scales list x   list log   10    type  l

User · Answer

The R graphics package has the function axTicks that returns the tick locations of the ticks that the axis and plot functions would set automatically  The other answers given to this question define the tick locations manually which might not be convenient in some situations   myTicks   axTicks 1  axis 1  at   myTicks  labels   formatC myTicks  format    d      A minimal example would be  plot 10  0 10   0 10  log    x   xaxt    n   myTicks   axTicks 1  axis 1  at   myTicks  labels   formatC myTicks  format    d      There is also an log parameter in the axTicks function but in this situation it does not need to be set to get the proper logarithmic axis tick location

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