pkdevbox / plotkit Goto Github PK

Setting shouldFill = false tells PK not to fill in the line graphs;
however, the graph still has closed wire frame that:

1) starts at 0,0 (even if it’s not in the data set)
2) goes through each point of the data set (this is correct)
3) goes to the maxX,0 point (lower-right corner)
4) goes back to 0,0
5) is always white, regardless of the colorScheme setting

The expected behavior for non-filled line graphs would seem simply to be
going through each point with a line of the data set’s color.

Moreover, the filled line graphs should not go through 0,0 and maxX,0; they
should simply go down to the X axis from the first and last points of the
data set.

I am attaching a patch to SweetCanvas.js that resolves both of these issues
for that renderer.

What steps will reproduce the problem?
1. Setting up a bar chart
2. Using a dataset as: [[0, 5], [5, 7]]
3. Draw the chart

The chart is drawn with no bar visible.

I'm using Plotkit 0.9.1

I wonder if this is your preferred location for a bug ticket...

What steps will reproduce the problem?
1. Use Ext-JS with your webpage
2. Use Plotkit with your webpage
3. Try to reproduce the "sqrt" bar plot example in your demos.

What is the expected output? What do you see instead?
I expect the example to work in a page that makes use of ExtJS (event if
it's only loading Ext with a JavaScript inclusion).
Instead I have an error and no chart.

What version of the product are you using? On what operating system?
I use PlotKit 0.9.1, MochiKit 1.3.1 and Ext-JS 2.1.
Firefox 2.0.0.16 on Windows Vista.

Please provide any additional information below.
The problem is that Ext-JS adds many functions to standard classes :
remove() inside arrays in our case.
Line 288 in Layout.js : var all = collapse(map(itemgetter(1),
items(this.datasets)));
At this line, we have an extraneous elements : index is 5 and value is
undefined.

Suggestion:EX
You should modify your usingPrototype() function to detect ExtJS, or always
set it to true as I think it would be more secure.


Best regards,
Olivier Favre

I would like to be able to name an axis (i.e. "Days", "Miles", etc.)

Tested with xajax and no propertly working.

A solution is to plot graph in a iframe.

I want to be able to save the chart (including all the labels) as a GIF or PNG 
image

If I specify these color values and data:

colorScheme: [ red, green, blue, yellow ]
data:        [  10,     5,    0,     10 ]

...what PlotKit will give is red, green, and blue slices; it skips the zero
value without accounting for this in the color scheme.

This is a problem when applications display dynamic data along with
custom-generated legends for the pie colors.

Support for stacked bar charts

I would like to be able to display the y-value of a point next to the point for 
every point on the graph.

SweetCanvas leaves out the shadow for pie graphs in IE.

At least with the latest excanvas, this is not necessary.