Legends are used in line graphs to explain the function or the values underlying the different lines of the graph. Legends - as they are found in maps - describe the pictorial language or symbology of the map. It gives us valuable information about the visualized data.īefore legends have been used in mathematical graphs, they have been used in maps. So we can say legends are the things in a graph or plot which have to be read to understand the plot. The word legend stems from Latin and it means in Latin "to be read".
They have to read it and this is where the original meaning comes from. Legends are the classical stories from ancient Greece or other places which are usually devoured by adolescents. This chapter of our tutorial is about legends. Estimation of Corona cases with Python and Pandas.Net Income Method Example with Numpy, Matplotlib and Scipy.Expenses and income example with Pandas and Python.Accessing and Changing values of DataFrames.Creating Videos from One or More Images.Image Processing Techniques with Python and Matplotlib.Image Processing in Python with Matplotlib.Adding Legends and Annotations in Matplotlib.Reading and Writing Data Files: ndarrays.Matrix Arithmetics under NumPy and Python.Numpy Arrays: Concatenating, Flattening and Adding Dimensions.Instructor-led training courses by Bernd Klein If None, the annotation will only be drawn when xy is within the axes and xycoords is 'data'.Live Python classes by highly experienced instructors:.If False, the annotation will always be drawn.If True, the annotation will only be drawn when xy is within the axes.Whether to draw the annotation when the annotation point xy is outside the axes area. Head_length=0.5,head_width=0.5,tail_width=0.2ĭefaults to None, i.e. The allowed values of 'arrowstyle' are: Name If arrowprops contains the key 'arrowstyle' the above keys are forbidden. The width of the base of the arrow head in pointsįraction of total length to shrink from both endsĪny key to If arrowprops does not contain the key 'arrowstyle' the allowed keys are: Key The properties used to draw a FancyArrowPatch arrow between the positions xy and xytext. use the same coordinate system for annotation point and text position. The coordinate system that xytext is given in.Īll xycoords values are valid as well as the following strings: Valueĭefaults to the value of xycoords, i.e. textcoords : str, Artist, Transform, callable or tuple, optional See Advanced Annotation for more details.ĭefaults to 'data'. xcoords and ycoords must each be of one of the above described types.
A tuple (xcoords, ycoords) specifying separate coordinate systems for x and y.The result of the function is interpreted like the Artist and Transform cases above. Where renderer is a RendererBase subclass. A Transform to transform xy to screen coordinates.Ī function with one of the following signatures: def transform(renderer) -> Bbox.(0, 0) would be the lower left corner of the bounding box and (0.5, 1) would be the center top of the bounding box. An Artist: xy is interpreted as a fraction of the artists Bbox.(theta,r) if not native 'data' coordinates Use the coordinate system of the object being annotated (default)
The following types of values are supported: The coordinate system that xy is given in. xycoords : str, Artist, Transform, callable or tuple, optional s is a deprecated synonym for this parameter. An arrow pointing from the text to the annotated point xy can then be added by defining arrowprops. Optionally, the text can be displayed in another position xytext. In the simplest form, the text is placed at xy.
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