Plotting errors bars from dataframe using Seaborn FacetGrid

by

When using FacetGrid.map, anything that refers to the data DataFrame must be passed as a positional argument. This will work in your case because yerr is the third positional argument for plt.errorbar, though to demonstrate I’m going to use the tips dataset:

from scipy import stats
tips_all = sns.load_dataset("tips")
tips_grouped = tips_all.groupby(["smoker", "size"])
tips = tips_grouped.mean()
tips["CI"] = tips_grouped.total_bill.apply(stats.sem) * 1.96
tips.reset_index(inplace=True)

I can then plot using FacetGrid and errorbar:

g = sns.FacetGrid(tips, col="smoker", size=5)
g.map(plt.errorbar, "size", "total_bill", "CI", marker="o")

enter image description here

However, keep in mind that the there are seaborn plotting functions for going from a full dataset to plots with errorbars (using bootstrapping), so for a lot of applications this may not be necessary. For example, you could use factorplot:

sns.factorplot("size", "total_bill", col="smoker",
               data=tips_all, kind="point")

enter image description here

Or lmplot:

sns.lmplot("size", "total_bill", col="smoker",
           data=tips_all, fit_reg=False, x_estimator=np.mean)

enter image description here

More Related Contents:

  1. How to have clusters of stacked bars with python (Pandas)
  2. How to plot in multiple subplots
  3. Annotate bars with values on Pandas bar plots
  4. Python matplotlib multiple bars
  5. plot different color for different categorical levels using matplotlib
  6. How to plot multiple Seaborn Jointplot in Subplot
  7. Format y axis as percent
  8. How to add value labels on a bar chart
  9. Plot a horizontal line on a given plot
  10. How to have clusters of stacked bars
  11. How to display custom values on a bar plot
  12. How to plot multiple dataframes in subplots
  13. How to plot and annotate grouped bars in seaborn / matplotlib
  14. Seaborn showing scientific notation in heatmap for 3-digit numbers
  15. Seaborn: countplot() with frequencies
  16. Modify the legend of pandas bar plot
  17. Putting text in top left corner of matplotlib plot
  18. How do you plot a vertical line on a time series plot in Pandas?
  19. How to deal with NaN values when plotting a boxplot
  20. Repeating x axis labels for all facets using FacetGrid in seaborn
  21. How can I group a stacked bar chart?
  22. How do I align gridlines for two y-axis scales using Matplotlib?
  23. pandas bar plot combined with line plot shows the time axis beginning at 1970
  24. Bar Chart with multiple labels
  25. making matplotlib scatter plots from dataframes in Python’s pandas
  26. plot different color for different categorical levels
  27. countplot() with frequencies
  28. Add image annotations to bar plots
  29. Seaborn multiple barplots
  30. Add density curve on the histogram

Leave a Comment