I have a specific set of values for example :
[1, 4, 12, 32, 150, 250]
How can I display them on a x axis but with the same gap between each ticks ?
For the momvent by specifying tickvalues to the axis with a linear scale I obtain something like that
1-4--12---32-------150----------250
But I am searching to obtain something like that :
1--4--12--32--150--250
Thanks for your help
Related
enter image description here
How do I set the x-axis on MATLAB with different intervals?
I'm trying to plot some data in seaborn where the x values are percentages*100 as floating point numbers (ie 90.909). When I make the plot:
fig, ax = plt.subplots(figsize=(10,10))
ax = sns.stripplot(df_12['% ident'], df_12['length'], jitter=True)
The decimals in the floating points make the X axis unreadable:
Initial Plot
I would like to set the x axis to show only whole number multiples of 5 (ie 80, 85, 90, 95, 100).
One method I have tried is the following:
fmt = '{:0.0f}'
xticklabels = []
count = 0
for item in ax.get_xticklabels():
count+= 1
item.set_text(fmt.format(float(item.get_text())));
xticklabels += [item];
ax.set_xticklabels(xticklabels);
This succeeds in changing the axis values to integers, but the axis looks busy. The numbers shown are also inconsistent between similar datasets.
Second Plot
I would like to reduce the total number of values shown on the axis. I have tried to use
ax.xaxis.set_major_locator(plt.MaxNLocator(5))
Or similarly
ax.xaxis.set_major_locator(plt.MaxNLocator(5))
ax.set_xticklabels([80, 85, 90, 95, 100])
Which give outputs similar to this:
Third Plot
If you compare this to the previous plot, you'll notice the x axis labels no longer relate to the points plotted. How do I set the values of the x axis while still keeping them related to the points plotted?
Other things I have tried:
ax.set_xlim(75, 100)
This and any variants result in a blank plot.
ax.set(xticklabels=[75,80,85,90,95,100])
Does the same thing where the axis labels don't match the data.
ax.set(xticks=range(75,101), xticklabels=[75,80,85,90,95,100])
Results in all the data points stuck on the left side of the plot with all the axis labels overlapping on a single tick on the right.
ax.xaxis.set_major_locator(ticker.MaxNLocator(integer=True))
This doesn't change the axis values to integers, and also appears to cause the axis to no longer correlate with the data.
I need Y axis ticks format in multiples of 500's
What I have is
http://i60.tinypic.com/104500w.jpg
What I need is
http://i58.tinypic.com/bfhod5.jpg
Solved.
I added the below property to the graph:
vAxis:{ticks: [0, 500, 1000, 1500, 2000, 2500, 3000, 3500]}
I have a d3 graph that uses a linear scale for its x axis. It looks something like this:
...
y |
|
+-------------------------------------------
0.0 0.5 1.0 1.5 2.0 2.5 3.0
Time in weeks
Beneath this axis I want to display rows of data aligned to the x axis. Like this:
23 23 22 19
Using this data:
var nums = [23, 23, 22, 19];
var times = [0, 0.5, 1.5, 3];
times are where the nums should fall on the Time in weeks x axis. So the first index of nums falls under 0.0, the second under 0.5, and so on.
The scale function looks something like this:
var x = d3.scale.linear().domain([0,3]).range([0, 600]);
So x(0.5) returns the correct range value for displaying a tick on the new axis. But what I want to display is the corresponding value from the nums array. That is, display the value of nums[times.indexOf(0.5)].
Is there a way to override scale() as used by d3.svg.axis() so that it displays nums values instead of times values while still using times as the input domain?
Edit
Here is a demo
Edit 2
I figured it out thanks to ne8il's answer. The answer was not complete, but it formed the basis for this code:
var x1Axis = d3.svg.axis()
.scale(x1)
.ticks(nums)
.tickValues(times)
.tickFormat(function(x){return nums[times.indexOf(x)];})
Working example
I believe in this case you can do
d3.svg.axis().ticks(times).tickValues(nums);
It will pass each 'time' into your scale function to map it to an x coordinate, and use the corresponding indexed value in 'nums' to output text.
Source is here
I guess this is a very basic question.
I have a graph which I created in MATLAB. This is a graph of Power (y-axis) versus Frequency (x-axis).
The range of my x-axis is from 0 to 1000. Now here is my problem. I want to draw a line from specific points on the x-axis to the graph. For example, for points 40, 400, 950.
By using set(gca, 'XTick', [40 400 950]); I am able to mark these particular points. But I want to make it more visible by drawing straight vertical lines from these points.
Any help will be greatly appreciated. Thank you.
Use plot with endpoints with the same x value and different y values. (and don't forget to use myaa to beautify the output).
x = 0:0.1:2*pi;
y = sin(x);
plot(x,y);
hold on;
plot([0.6 0.6], [-1 1], 'Color', [0.7 0.7 0.7], 'LineWidth', 2);
plot([3.6 3.6], [-1 1], 'Color', [0.7 0.7 0.7], 'LineWidth', 2);
If you do this often I would recommend you a great submission from the FileExchange:
hline and vline
Just do:
vline([40 400 950])
Read the function documentation, if you want the line to have different properties than default.
I typically do this using something like this (is powers is a row vector).
powers = randn(1,1000)+40;
plot([1;1]*[40 400 950], [[0 0 0]; [powers([40 400 950])]],'k-')