Xaxis标签与数据点不匹配-Pandas / Matplotlib

Question

I have a TimeSeries in Pandas that I want to plot. I have 336 records in the TimeSeries. I only want to show the date/time (index of the TimeSeries) on the x-axis once per every 20 or so data points.

Here is how I am trying to do this:

stats.plot()
ax.set_xticklabels(stats.index, rotation=45 ) 
ax.xaxis.set_major_locator(MultipleLocator(20))
ax.xaxis.set_minor_locator(NullLocator())
ax.yaxis.set_major_locator(MultipleLocator(.075))
draw() 

?My x-axis show the correct number of labels (18), but these are the first 18 in the series, they are not correctly corresponding to the datapoints in the plot.

Answer 1

The problem is you are using set_xticklabels which sets the value of the tick labels independent of the data . The ticks are labeled sequentially from the list you pass in.

From this I can't really tell what you are trying to do, but the behavior you are seeing is the 'correct' behavior for the library (it's doing exactly what you told it to, but that isn't what you want it to do).