Bug summary

Plotting a scatter wherec= is a sequence with the initial value beingnan will have the legend entry showing text only

Code for reproduction

importmatplotlib.pyplotaspltimportnumpyasnpx=np.linspace(0,1,50)y=np.linspace(-1,1,50)c=np.linspace(10,100,50)c_nan=np.linspace(10,100,50)c_nan[0]=np.nanfig,ax=plt.subplots()line1=ax.scatter(x,y,c=c,s=12,label='Test 1')line2=ax.scatter(x*2,y*2,c=c_nan,s=12,label='Test 2')ax.legend()plt.show()

Actual outcome

Expected outcome

Have each legend entry show a symbol

Additional information

No response

Operating system

WIndows

Matplotlib Version

3.6.3

Matplotlib Backend

Qt5Agg

Python version

3.10.x

Jupyter version

No response

Installation

pip