Difference between revisions of "Chart2/Axis"
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(Added Outliers: Axis Break) |
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* http://specs.openoffice.org/chart/Chart_Scales_and_Intervals.odt | * http://specs.openoffice.org/chart/Chart_Scales_and_Intervals.odt | ||
* covered in http://www.openoffice.org/issues/show_bug.cgi?id=26869 | * covered in http://www.openoffice.org/issues/show_bug.cgi?id=26869 | ||
+ | |||
+ | == Outliers: Break Axis == | ||
+ | |||
+ | Occasionally one has to picture data that contains '''outliers'''. This is currently not easy performed. Consider the following data series: ''1, 2, 3, ..., 9, 10,'' and ''200''. | ||
+ | |||
+ | Obviously '200' is far beyond the rest of the data. If we plot a bar-graph, the values ''1-10'' will be barely visible (and have almost the same magnitude), while the value 200 will strike out. | ||
+ | |||
+ | '''Workaround''' | ||
+ | |||
+ | To solve this issue, we need to be able to split the '''Y-Axis''' into 2 sections: | ||
+ | * first section could be from 0 to 20 | ||
+ | * then it follows a short empty space (Y axis is discontinuous) | ||
+ | * and the 2nd Y-axis, which contains values around 200 | ||
+ | |||
+ | e.g. | ||
+ | '''Y-axis''' | ||
+ | |||
+ | ^ ^ | ||
+ | 210 | | | ||
+ | 200 | | | ||
+ | 190 | | | ||
+ | / ''OR'' ... | ||
+ | / | | ||
+ | 20 | | | ||
+ | 10 | | | ||
+ | 0 | | | ||
+ | |||
+ | a strike | ||
+ | through ''OR'' ... | ||
+ | the Y-axis | ||
+ | |||
+ | This way it is possible to display accurately both the outliers (the ''200'' value) as well as the normal data, enhancing therefore the visualisation of all the relevant data. |
Revision as of 17:48, 16 August 2007
Limit the number of axis labels displayed
- 1 over 2, 1 over 3,...
- Displaying the labels is automatic but it doesn't always meet the needs.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=58731
Inverse axis position
- X axis at the top
- Y axis at the right
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=55501
Reverse axis direction
Clockwise pie segment orientation
Affect units to the axis
- Hundreds, Thousands, Millions,...
- Kilo, Mega,...
- This example displays units in Thousands.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=29918
Add a title on the secondary Y axis
- A work around is to add a subtitle and to use it for the secondary axis, but it's a work around :-)
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=1163
Modify the scale of X axis also when it's not an XY chart
- In this example, scale begins on the 1/1 and ends the 3/1 while data begin the 2/1 and end on the 4/1.
Axes labels customizable
- One can choose the label text format and number format regardless the data source range.
- In this example, date format displayed differently from the data range. March label text is manually modified.
- In Excel 2000, it's not possible to modify text and label format individually.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=64703
Enhance the automatic line break for axis labels
Units of axes properties (numbers, hours, days, month
- The dialog that allows to modify axes properties doesn't indicates units (hours, days, weeks, month...) to adjust the scale (minimum, maximum, primary and secondary intervals)
an axes formatted to date and where the primary interval settings are less than 24 hours will be displayed as “double” format and not as hours.
- It's not possible to set a maximum date or a minimum date but only a number representing date in a numerical format.
- If axes are in date format, it's not possible to settle an interval every 1st of each month.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=25706
Ability to fix the maximum and minimum property of axes from a spreadsheet cell
Allow to change spacing between axes and axes labels
Mini and maxi of a logarithmic scale
- Manually settling of the maximum and minimum of a logarithmic scale is not available.
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=27694
Interval of logarithmic scale
- It's not possible to modify the primary interval in logarithmic scale
- A very detail spec is available, please see:
- http://specs.openoffice.org/chart/Chart_Scales_and_Intervals.odt
- covered in http://www.openoffice.org/issues/show_bug.cgi?id=26869
Outliers: Break Axis
Occasionally one has to picture data that contains outliers. This is currently not easy performed. Consider the following data series: 1, 2, 3, ..., 9, 10, and 200.
Obviously '200' is far beyond the rest of the data. If we plot a bar-graph, the values 1-10 will be barely visible (and have almost the same magnitude), while the value 200 will strike out.
Workaround
To solve this issue, we need to be able to split the Y-Axis into 2 sections:
- first section could be from 0 to 20
- then it follows a short empty space (Y axis is discontinuous)
- and the 2nd Y-axis, which contains values around 200
e.g.
Y-axis ^ ^ 210 | | 200 | | 190 | | / OR ... / | 20 | | 10 | | 0 | | a strike through OR ... the Y-axis
This way it is possible to display accurately both the outliers (the 200 value) as well as the normal data, enhancing therefore the visualisation of all the relevant data.