I am using latest flot plugin 0.8 to plot some realtime data.I stuck at following issue
I highlighted point using plot.highlight(series, dataPoint);
Its perfectly working fine.But now I want to change highlight color of already plotted graph.
Is there any way to change highlight point color after plotting flot chart?
Any help would be highly appreciated.
Simply change the series 'highlightColor' option, i.e.
plot.getData()[0].highlightColor = "#f00";
Related
I'm trying to plot using labels with varying font size. For example:
plot "some_data_file" using 1:2:(20-$3) using labels font sprintf("Helvetica,%d",variable)
Or something to that effect. The label's font size should be 20 minus the value in the third column. This line doesn't work, but I think it displays what I'm trying to do. Any ideas?
Look at cities.dem demo on gnuplot.info for a way to do this.
I'll steal the solution there, modified for you:
plot "some_data_file" using 2:3:(sprintf("{/Helvetica=%d %s}",\
20-$4, stringcolumn(4))) with labels
I would like to create a bar-chart (or a histogram?) with vertical bars and a numerical x-axis , but I do not know how/where to start. I have MS-Excel and Origin-plot available with me. My intended chart would look like this:
You can more or less get what you want by adding and styling error bars appropriately to a scatter plot. The error bar is a simple way to force Excel to draw a line under/over the point.
Chart with data and error bars
Couple steps
Make an XY scatter chart
Add the error bars and delete the horizontal ones that come up
Set the negative error bar for the points to be equal to the same value that is being plotted
Set the positive error bar to 0 so it does not show
Change the formatting on the error bar to be thicker
Possible hide the initial dot shown so that it is bar only
You could take these steps and codify them with some VBA to prevent the tedious nature of doing this multiple times. Setting error bars is one of the worst activities to have to do continually.
I believe you should also be able to get your desired colors by adding multiple series. Possibly all the more reason to do this with VBA.
I'm trying to create a combined scatter plot and "bar chart" - the bars extend the full height of the chart, but their width varies (I have a table with the start and finish points on the x-axis).
Here is a mock-up:
http://imgur.com/EHzv5YB
Do you think this is possible in Excel? I have found some links on how to overlay multiple plot types, but none involving variable width shaded areas as seen in the example.
Would really appreciate any help. Thanks!
I've written a tutorial showing how to Highlight Certain Time Periods in a Chart.
I have a set of data that I'm plotting as a scatter graph which has both positive and negative values on both axis. When I plot this in Flot, the axis are draw at the bottom and the left by default. Is there a way to make it draw the axis through the center of the graph? #X=0 and Y=0?
In other words, instead of this:
I want something like this:
That isn't possible in the default flot. I'm sure it could be hacked in if you wanted to dig into the source, but flot by itself only supports left/right for the y-axis, and top/bottom for the x-axis.
In case anybody else comes across the same need, I created a plugin for Flot and put it here:
https://github.com/burlandm/Flot-Origin-Axis
It does what I need, but I won't make any promises that it'll fit your particular scenario. If I have time, I might try and update it to cover more scenarios.
I'm using Excel 2007 to create a log-scale chart of numbers (specifically the Zimbabwean dollar exchange rate) over time. I'm using an x-y scatterplot and noticing one odd quirk.
The range of y values (numbers) spans a factor of about 10^30. On every chart I make using this data, half the gridlines are missing. Specifically, only the gridlines corresponding to the largest values show up. In fact, regardless of the total range only the top factor of 10^13 or so have gridlines. This is not dependent on the log base.
Am I doing something wrong? Is this a known bug? I can't find any references to this issue on google or microsoft's bug reports.
Silly work around as well, but if you are going to be presenting your graph in Powerpoint, you can make the background color of the graph "no fill" and then when you paste it into Powerpoint (I paste it as a PDF). You can draw grid lines and match them up with the ticks on the y-axis. Arrange your graph "bring to front" when you are finished drawing so that the lines won't appear in front of your data. You can group it all to make sure the lines don't shift while making your presentation and so that they re-size properly if you re-size your graph.
I'm having the same problem, it's definitely a bug.
Try a sequence 1, 10, 100, 1e+12, 1e+30 vs 0..4 and plot x,y scatter, and clearly the scale grid is messed-up even in linear, and in log is the behaviour you described.
My workaround was to make a transformation of the values and depict them scaled down (by a Million factor). That way the data the graph is handling is never above 10e9 (the value I started to hit issues).
So, my suggestion is: graph a Log version of the data (and clearly make a legend for it)
I was able to replicate your problem and come up with a pseudo-workaround.
The formatting goes a bit funny, but all the lines show up if you right-click on the axis, select Format Axis. Under the Axis Options, there is a Horizontal Axis Crosses setting. Changing it from Automatic to Maximum Axis Value causes all the gridlines to appear.
Ran into same thing: Will not show log grid lines for y-axis ranging below 1e-7. Have need for dynamic range of 1e5 down to 1e-15. Tagging auto or max will show grid, but puts axis labels in non-useful place for display.
My workaround: used Open Office to get what I needed. Could not find useful solution in Excel 2010.