如何在Plone中使用matplotlib [英] How to use matplotlib in Plone

问题描述

我正在将Plone 4.3与matplotlib一起使用.我有绘图窗口，但是我想在页面模板中渲染绘图窗口.有些人建议我使用HTML5 canvas在模板页面中绘制绘图窗口.但是我无法理解这个概念.有人可以帮助我吗?

I am using Plone 4.3 with matplotlib. I have the plot window but I want to render the plot window in a page template. Some folks suggested I use HTML5 canvas to render the plot window in a template page. But I am unable to grasp that concept. So anyone can help me?

推荐答案

创建浏览器视图，设置标题类型，然后返回图像数据，例如

Create a browser view, set the header type, and return the image data e.g.

from zope.publisher.browser import BrowserPage


class PloneMatPlotLib(BrowserPage):
    """
    """

    def __call__(self):

        import cStringIO
        from matplotlib.figure import Figure
        from matplotlib.backends.backend_agg import FigureCanvasAgg

        x, y = 4, 4

        fig = Figure(figsize=[x, y])
        ax = fig.add_axes([.1, .1, .8, .8])
        ax.scatter([1, 2], [3, 4])
        canvas = FigureCanvasAgg(fig)

        # write image data to a string buffer and get the PNG image bytes
        buf = cStringIO.StringIO()
        canvas.print_png(buf)
        data = buf.getvalue()

        # write image bytes back to the browser
        self.request.response.setHeader("Content-type", "image/png")
        return data

然后您可以(通过网络)将此视图称为TTW以获取图像，例如http://localhost:8080/Plone/@@plone_matplotlib.或在页面模板中，例如:

You can then call this view TTW (through the web) to get the image e.g. http://localhost:8080/Plone/@@plone_matplotlib. Or in a page template e.g.:

<div metal:use-macro="here/main_template/macros/master">
    <div metal:fill-slot="main">
       <img tal:attributes="src python:context.absolute_url() + '/@@plone_matplotlib'">
    </div>
</div>

更多信息:

• https://github.com/aclark4life/plone_matplotlib

这篇关于如何在Plone中使用matplotlib的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！