Как в Бухгалтерии 8 распечатать сразу все счета-фактуры за определенный период. Узнайте, как поставить пароль на браузер, чтобы закрыть доступ к конфиденциальным данным. Pyplot tutorial¶ zha.институтдиетологии.рф is a collection of command style functions that make matplotlib work like MATLAB. Each pyplot function makes some change to a. 1 Bit is the largest network among 1C: Franchisee in the market information technologies. Our job was to create a brochure about their services. A booklet about Runovo project for MCM with a lot of illustrations and infographics.
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Each pyplot function makes some change to a figure: e. In matplotlib.
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Source code , png , pdf. You may be wondering why the x-axis ranges from and the y-axis from If you provide a single list or array to the plot command, matplotlib assumes it is a sequence of y values, and automatically generates the x values for you. Since python ranges start with 0, the default x vector has the same length as y but starts with 0. Hence the x data are [0,1,2,3]. For example, to plot x versus y, you can issue the command:.
For every x, y pair of arguments, there is an optional third argument which is the format string that indicates the color and line type of the plot.
The letters and symbols of the format string are from MATLAB, and you concatenate a color string with a line style string. For example, to plot the above with red circles, you would issue.
See the plot documentation for a complete list of line styles and format strings.
The axis command in the example above takes a list of [xmin, xmax, ymin, ymax] and specifies the viewport of the axes. If matplotlib were limited to working with lists, it would be fairly useless for numeric processing.
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Generally, you will use numpy arrays. In fact, all sequences are converted to numpy arrays internally. The example below illustrates a plotting several lines with different format styles in one command using arrays.
Lines have many attributes that you can set: linewidth, dash style, antialiased, etc; see matplotlib. There are several ways to set line properties. Use the setter methods of a Line2D instance. In the code below we will suppose that we have only one line so that the list returned is of length 1. We use tuple unpacking with line, to get the first element of that list:.
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Use the setp command. Here are the available Line2D properties.
To get a list of settable line properties, call the setp function with a line or lines as argument. All plotting commands apply to the current axes. The function gca returns the current axes a matplotlib. Axes instance , and gcf returns the current figure matplotlib. Figure instance. Below is a script to create two subplots.
So subplot is identical to subplot 2, 1, 1. You can create an arbitrary number of subplots and axes. If you want to place an axes manually, i.
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You can create multiple figures by using multiple figure calls with an increasing figure number. Of course, each figure can contain as many axes and subplots as your heart desires:. You can clear the current figure with clf and the current axes with cla.
If you are making lots of figures, you need to be aware of one more thing: the memory required for a figure is not completely released until the figure is explicitly closed with close.
The text command can be used to add text in an arbitrary location, and the xlabel , ylabel and title are used to add text in the indicated locations see Text introduction for a more detailed example.
All of the text commands return an matplotlib. Text instance. Just as with with lines above, you can customize the properties by passing keyword arguments into the text functions or using setp :. These properties are covered in more detail in Text properties and layout. For example to write the expression in the title, you can write a TeX expression surrounded by dollar signs:.
The r preceding the title string is important — it signifies that the string is a raw string and not to treat backslashes as python escapes.
Thus you can use mathematical text across platforms without requiring a TeX installation. For those who have LaTeX and dvipng installed, you can also use LaTeX to format your text and incorporate the output directly into your display figures or saved postscript — see Text rendering With LaTeX. The uses of the basic text command above place text at an arbitrary position on the Axes.
A common use for text is to annotate some feature of the plot, and the annotate method provides helper functionality to make annotations easy.
In an annotation, there are two points to consider: the location being annotated represented by the argument xy and the location of the text xytext. Both of these arguments are x,y tuples.
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In this basic example, both the xy arrow tip and xytext locations text location are in data coordinates. There are a variety of other coordinate systems one can choose — see Basic annotation and Advanced Annotation for details. This is commonly used if data spans many orders of magnitude. Changing the scale of an axis is easy:. This Page Show Source. Quick search. There are several ways to set line properties Use keyword args: plt.
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For example to write the expression in the title, you can write a TeX expression surrounded by dollar signs: plt. Changing the scale of an axis is easy: plt. Last updated on May 10, Created using Sphinx 1.