Hi So you are suggesting the bars should not at all be affected by logScale=true? I mean, for what I understand, the purpose of logarithmic scale is indeed to show a 'distorted' version of the data to help display very large value alongside very small values. so 0.001 and 10000 can both have reasonably sized bars representing them instead of the former being less then 1 pixel high.
Can you sketch some example of how you would like to see a lograthmic scaled chart of some example data ? Badtnik On Tue, Aug 10, 2010 at 5:23 PM, Adam <[email protected]> wrote: > Hi Badtnik > > I will try to clarify what I meant. > As an example, let's take a Column Chart with logScale=true. > In this case the y-axis will be labeled in a logarithmic fashion > (example 0, 10, 100, 1000 ...) > However, the column values are not logarithmic - they are the real > values. So for example, a column having a real value of 1000 will > correspond to the 1000 y-axis label. > > Since the data values are the real data values and not logarithms, I > don't see any problem having the same method of logarithmic labeling > of the negative y-axis. > > > > On Aug 10, 12:55 pm, Badtnik <[email protected]> wrote: > > Hey Adam > > > > What you are suggesting is interesting but might cause a lot of > confusion, > > for example: > > - the values -10 and 1/10 will be positioned in the same height > > - the value 0.5 will be positioned lower than -0.5 > > In general, the positioning function you are suggesting is not monotone > nor > > is it continuous. > > > > Wikipedia:http://en.wikipedia.org/wiki/Logarithmic_scaleseems to only > > describe logarithmic scale of positive values > > Do you have any reference to literature or an example of a well known > > charting tool that behaves that way? > > > > Badtnik > > > > On Mon, Aug 9, 2010 at 6:30 PM, Adam <[email protected]> wrote: > > > Why does the logScale configuration option of the Column and Bar > > > Charts require all values to be positive? (according the the > > > documentation) > > > > > There is no reason for negative values not to have a log scale. The > > > scale should be calculated according to the absolute values of the > > > data. So the negative log scale would be something similar to -1, -10, > > > -100, ... > > > > > -- > > > You received this message because you are subscribed to the Google > Groups > > > "Google Visualization API" group. > > > To post to this group, send email to > > > [email protected]. > > > To unsubscribe from this group, send email to > > > [email protected]<google-visualization-api%[email protected]> > <google-visualization-api%[email protected]<google-visualization-api%[email protected]> > > > > > . > > > For more options, visit this group at > > >http://groups.google.com/group/google-visualization-api?hl=en. > > > > > > -- > You received this message because you are subscribed to the Google Groups > "Google Visualization API" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-visualization-api%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-visualization-api?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Visualization API" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-visualization-api?hl=en.
