迷途知返 http://pwwang.com 专注技术,用心生活! Fri, 02 Jul 2010 02:26:53 +0000 en hourly 1 http://wordpress.org/?v=3.0 linux下列举特定时间段文件的命令 http://pwwang.com/technology/linux/linux_ls_time_limit/ http://pwwang.com/technology/linux/linux_ls_time_limit/#comments Thu, 24 Jun 2010 09:24:07 +0000 pwwang http://pwwang.com/?p=951 Read More: 171 Words Totally]]>  我们知道在linux下，ls，或者ll（ls -l）可以列出目录下的文件，加上grep可以对文件名进行过滤

可以如果我们要列出特定时间段创建的文件呢？

让awk大发神威吧。

 

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ls -l --time-style=+%Y%m%d%H%M | awk '$6 > "201006241251"' | awk '$6 < "201006241255"'

 

不得不说， 需要灵活的头脑啊！

]]> http://pwwang.com/technology/linux/linux_ls_time_limit/feed/ 1 asp分页类 http://pwwang.com/technology/asp/asp_pagination_class/ http://pwwang.com/technology/asp/asp_pagination_class/#comments Thu, 10 Jun 2010 12:36:09 +0000 pwwang http://pwwang.com/?p=939 Read More: 4138 Words Totally]]>  

效果图：

调用：

 

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<%@LANGUAGE="VBSCRIPT" CODEPAGE="65001"%>
<!--#include file="access.class.asp"-->
<!--#include file="pagination.class.asp"-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>无标题文档</title>
<link href="pagination.css" rel="stylesheet" type="text/css" />
</head>
 
<body>
<%
function len1(a)
len1 = left(a,10) & "..."
end function
 
set p = new Pagination
p.template="{{title|len1}}"
p.sql = "select * from News"
p.pkey = "id"
p.cols = 2
p.page = request.QueryString("page")
p.show
%>
</body>
</html>

 

类代码：

 

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<%
''''''''''''''''''''''''''''''''
'                              '
' Author: pwwang               '
' Site  : http://pwwang.com    '
' Version: 1.0                 '
'                              '
''''''''''''''''''''''''''''''''

class Pagination
    private pSql
    private pHeader
    private pFooter
    private pTemplate
    private pRows
    private pCols
    private pPage
    private pPKey
 
    private pPageCount
    private pRecordCount
 
    public property let pkey(value)
        pPKey = value
    end property
 
    public property let page(value)
        pPage = value
        if not isNumeric(pPage) then pPage = 1
        if pPage < 1 then pPage = 1
        pPage = cint(pPage)
    end property
 
    public property let sql(value)
        pSql = value
        db.query(value)
    end property
 
    public property let header(value)
        pHeader = value
    end property
 
    public property let footer(value)
        pFooter = value
    end property
 
    public property let template(value)
        pTemplate = value
    end property
 
    public property let rows(value)
        pRows = value
    end property
 
    public property let cols(value)
        pCols = value
    end property
 
    private function tempcode(i)
        dim t, re, re1, matches, mat, mat1, datandfun, data, fun
        set re = new RegExp
        set re1 = new RegExp
        t = pTemplate
 
        re.Pattern="\{\{\s*[^}]+\s*\}\}"
        re.global = true
        set matches = re.execute(t)
 
        for each mat in matches
            mat1 = trim(mid(mat,3,len(mat)-4))
            datandfun = split(mat1, "|")
            if Ubound(datandfun) = 0 then
                data = trim(mat1)
                t = replace(t, mat, db.get_value2(data,i))
            else
                data = trim(datandfun(0))
                fun  = trim(datandfun(1))
                t = replace(t, mat, eval( fun & "(""" & db.get_value2(data, i) & """)"))
            end if
        next
        tempcode = t
    end function
 
    private function getFooter()
        if not pFooter then
            getFooter = ""
        else
            getFooter = "<table width='100%' border='0' id='pagination_footer'>"
            getFooter = getFooter & "<tr><td>"
            getFooter = getFooter & " 当前页:" & pPage & "/" & pPageCount
            getFooter = getFooter & " 记录数:" & pRecordCount
            if pPage > 1 then
                getFooter = getFooter & " <a href='?page=1'>首页</a> <a href='?page=" & pPage - 1 &"'>上页</a> "
            else
                getFooter = getFooter & " 首页 上页 "
            end if
            if pPage < pPageCount then
                getFooter = getFooter & " <a href='?page=" & pPage + 1 &"'>下页</a> <a href='?page=" & pPageCount & "'>尾页</a> "
            else
                getFooter = getFooter & " 下页 尾页 "
            end if
            getFooter = getFooter & " 跳到第<input type='text' id='gotopage' size='1' value='"&pPage&"' />页<input type='button' value='Go' onclick=""javascript:location='?page='+document.getElementById('gotopage').value"" />"
            getFooter = getFooter & "</td></tr></table>"
        end if
    end function
 
    private function mainloop()
        if isempty(pFooter) then pFooter = true
        if isempty(pRows) then pRows = 10
        if isempty(pCols) then pCols = 1
 
        pRecordCount = db.num_rows
        pPageCount = cint(pRecordCount / (pRows * pCols) + 0.5)
        if pPage > pPageCount then pPage = pPageCount
 
        dim pagesql, startr, endr
        startr  = (pPage - 1) * pRows * pCols
        if pPage * pRows * pCols > pRecordCount then
            endr = pRecordCount
        else
            endr = pPage * pRows * pCols
        end if            
        if pPage > 1 then
            pagesql = "SELECT TOP " & endr & " * FROM (" & pSql & ") WHERE " & pPKey & " NOT IN (SELECT TOP " & startr & " " & pPKey & " FROM (" & pSql & "))"
        else
            pagesql = "SELECT TOP " & pRows * pCols & " * FROM (" & pSql & ")"
        end if
 
        db.query(pagesql)
 
        dim i, j
        mainloop = "<table width='100%' border='0' cellspacing='1' id='pagination_table'>"
        for i = 0 to pRows - 1
            if i mod 2 = 0 then
                mainloop = mainloop & "<tr class='odd'>"
            else 
                mainloop = mainloop & "<tr class='even'>"
            end if
            for j = 0 to pCols - 1
                mainloop = mainloop & "<td>"
                if i*pCols+j < db.num_rows then
                    mainloop = mainloop & tempcode(i*pCols+j)
                else 
                    mainloop = mainloop & " "
                end if
                mainloop = mainloop & "</td>"
            next
            mainloop = mainloop & "</tr>"
        next
        mainloop = mainloop & "</table>"
    end function
 
    public sub show()
        response.write pHeader
        response.write mainloop
        response.write getFooter
    end sub
 
end class
 
%>

 

CSS:

 

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#pagination_table{
    background-color:#09F;
    font-size:12px;
}
 
#pagination_table td{
    padding:4px;
}
 
#pagination_table tr.odd{
    background-color:#fff;
}
 
#pagination_table tr.even{
    background-color:#eee;
}
 
#pagination_footer{
    text-align:center;
    font-size:12px;
}

 

说明：

1. 需要调用之前发布的access操作类

2. 可以分列，单页记录数为rows和cols决定

3. 表头由参数header直接给出

4. 参数footer决定是否显示表脚（翻页链接）

5. {{parm}}用来显示数据库中这个列名对应的数据

6. {{parm|fun}}fun函数可以对这个数据进行修饰

7. 表的样式可以通过css定义，奇偶行可以定义不同的样式

 

]]> http://pwwang.com/technology/asp/asp_pagination_class/feed/ 1 [纯属无聊]asp access数据库操作类 http://pwwang.com/technology/asp/%e7%ba%af%e5%b1%9e%e6%97%a0%e8%81%8aasp-access%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e7%b1%bb/ http://pwwang.com/technology/asp/%e7%ba%af%e5%b1%9e%e6%97%a0%e8%81%8aasp-access%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e7%b1%bb/#comments Mon, 07 Jun 2010 12:30:42 +0000 pwwang http://pwwang.com/?p=937 Read More: 1352 Words Totally]]> 调用：

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db.query("select * from News")
rs = db.fetch_all
for i=0 to db.num_rows - 1
    response.write rs(1,i) & "<br>"
next
 
db.query("select * from admin")
response.write db.get_value("id")

类代码：

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<%
class DBConn
    private conn
    private rs
 
    private sub Class_Initialize
        Set conn = Server.CreateObject("ADODB.Connection")
        set rs = Server.CreateObject("adodb.recordset")
    end sub
 
    Private Sub Class_Terminate
        rs.close
        set rs = nothing
        conn.close
        set conn = nothing
    end sub
 
    private function indexOfCols(colname)
        dim i
        for i = 0 to rs.fields.count - 1
            if rs(i).name = colname then
                indexOfCols = i
                exit function
            end if 
        Next
    end function
 
    public sub query(sql)
        if rs.state = 1 then rs.close
        rs.open sql,conn,1,3
    end sub
 
    public function get_value(colname)
        get_value = rs(colname) 
    end function
 
    public function get_value2(colname, row)
        dim rows
        rs.movefirst
        rows = rs.getrows()
        get_value2 = rows(indexOfCols(colname), row)
    end function
 
    public function get_value3(col, row)
        dim rows
        rs.movefirst
        rows = rs.getrows()
        get_value3 = rows(col, row)
    end function
 
    public function fetch_array()
        redim ret(rs.fields.count)
        dim i
        for i=0 to ubound(ret) - 1
            ret(i) = rs(i)
        next
        fetch_array = ret
    end function
 
    public function num_rows()
        num_rows = rs.recordcount
    end function
 
    public function fetch_all()
        rs.movefirst
        fetch_all = rs.getrows()
    end function
 
    public function num_fields()
        num_fields = rs.fields.count
    end function
 
    public sub open(connstr)
        conn.open connstr
    end sub
 
end class
 
dim db
set db = new DBConn
db.open "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Server.MapPath("#db.mdb")
 
%>

]]> http://pwwang.com/technology/asp/%e7%ba%af%e5%b1%9e%e6%97%a0%e8%81%8aasp-access%e6%95%b0%e6%8d%ae%e5%ba%93%e6%93%8d%e4%bd%9c%e7%b1%bb/feed/ 2 PyChartDirector中文教程[8]：饼图的图例 http://pwwang.com/technology/python/pychartdirector8/ http://pwwang.com/technology/python/pychartdirector8/#comments Tue, 18 May 2010 02:13:24 +0000 pwwang http://pwwang.com/?p=933 Read More: 3789 Words Totally]]>  

上节我们说了标签，这节我们来说图例：

先看图

这个例子不仅展示了图例的显示，也展示了标签的样式的设定和饼图边缘阴影化。

－图例增加通过：BaseChart.addLegend

－改变标签样式使用：PieChart.setLabelFormat

－增加边缘阴影：PieChart.setSectorStyle

代码：

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#!/usr/bin/python
from pychartdir import *
 
# The data for the pie chart
data = [25, 18, 15, 12, 8, 30, 35]
 
# The labels for the pie chart
labels = ["Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities",
    "Production"]
 
# Create a PieChart object of size 450 x 270 pixels
c = PieChart(450, 270)
 
# Set the center of the pie at (150, 100) and the radius to 80 pixels
c.setPieSize(150, 135, 100)
 
# add a legend box where the top left corner is at (330, 50)
c.addLegend(330, 60)
 
# modify the sector label format to show percentages only
c.setLabelFormat("{percent}%")
 
# Set the pie data and the pie labels
c.setData(data, labels)
 
# Use rounded edge shading, with a 1 pixel white (FFFFFF) border
c.setSectorStyle(RoundedEdgeShading, 0xffffff, 1)
 
# Output the chart
c.makeChart("legendpie.png")

我们再来看看更为复杂一点的图例：

我们看看这张图有些什么效果：背景颜色渐变、圆角图例框、软阴影、自定义区域颜色、区域阴影渐变、用CDML自定义区域标签、格式化的图例文字

－背景颜色渐变：BaseChart.linearGradientColor

－圆角图例框：BaseChart.setRoundedFrame

－软阴影：BaseChart.setDropShadow

－区域自定义颜色：BaseChart.setColors

－区域渐变阴影：PieChart.setSectorStyle

－自定义区域标签：PieChart.setLabelFormat（设置序号）、PieChart.setLabelStyle（设置样式）、Box.setBackground（标签加框）

－图例文字设置：用LegendBox的TextBox.setText，图例文字模板是用如下CDML描述的：

<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}<*/*><*block,width=40,halign=right*>{percent}<*/*>%

<*block,valign=top*> 表示图例中不同的部分都顶端对齐，这样图例第二部分可以多行显示

{={sector}+1}.<*advanceTo=22*> 显示序号，并TAB到22px的位置（sector从0开始，所以要+1）

<*block,width=120*>{label}<*/*> 在120px长的block中显示标签，如果标签文字长于120px，则多行显示

<*block,width=40,halign=right*>{percent}<*/*>% 在40px长的block中显示百分比，并右对齐

 

代码：

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#!/usr/bin/python
from pychartdir import *
 
# The data for the pie chart
data = [21, 18, 15, 12, 8, 24]
 
# The labels for the pie chart
labels = ["Labor", "Licenses", "Taxes", "Legal", "Facilities", "Production"]
 
# The colors to use for the sectors
colors = [0x66aaee, 0xeebb22, 0xbbbbbb, 0x8844ff, 0xdd2222, 0x009900]
 
# Create a PieChart object of size 600 x 320 pixels. Use a vertical gradient color
# from light blue (99ccff) to white (ffffff) spanning the top 100 pixels as
# background. Set border to grey (888888). Use rounded corners. Enable soft drop
# shadow.
c = PieChart(600, 320)
c.setBackground(c.linearGradientColor(0, 0, 0, 100, 0x99ccff, 0xffffff), 0x888888)
c.setRoundedFrame()
c.setDropShadow()
 
# Add a title using 18 pts Times New Roman Bold Italic font. Add 16 pixels top margin
# to the title.
c.addTitle("Pie Chart With Legend Demonstration", "timesbi.ttf", 18).setMargin2(0, 0,
    16, 0)
 
# Set the center of the pie at (160, 165) and the radius to 110 pixels
c.setPieSize(160, 165, 110)
 
# Draw the pie in 3D with a pie thickness of 25 pixels
c.set3D(25)
 
# Set the pie data and the pie labels
c.setData(data, labels)
 
# Set the sector colors
c.setColors2(DataColor, colors)
 
# Use local gradient shading for the sectors
c.setSectorStyle(LocalGradientShading)
 
# Use the side label layout method, with the labels positioned 16 pixels from the pie
# bounding box
c.setLabelLayout(SideLayout, 16)
 
# Show only the sector number as the sector label
c.setLabelFormat("{={sector}+1}")
 
# Set the sector label style to Arial Bold 10pt, with a dark grey (444444) border
c.setLabelStyle("arialbd.ttf", 10).setBackground(Transparent, 0x444444)
 
# Add a legend box, with the center of the left side anchored at (330, 175), and
# using 10 pts Arial Bold Italic font
b = c.addLegend(330, 175, 1, "arialbi.ttf", 10)
b.setAlignment(Left)
 
# Set the legend box border to dark grey (444444), and with rounded conerns
b.setBackground(Transparent, 0x444444)
b.setRoundedCorners()
 
# Set the legend box margin to 16 pixels, and the extra line spacing between the
# legend entries as 5 pixels
b.setMargin(16)
b.setKeySpacing(0, 5)
 
# Set the legend box icon to have no border (border color same as fill color)
b.setKeyBorder(SameAsMainColor)
 
# Set the legend text to show the sector number, followed by a 120 pixels wide block
# showing the sector label, and a 40 pixels wide block showing the percentage
b.setText(
    "<*block,valign=top*>{={sector}+1}.<*advanceTo=22*><*block,width=120*>{label}" \
    "<*/*><*block,width=40,halign=right*>{percent}<*/*>%")
 
# Output the chart
c.makeChart("legendpie2.png")

]]> http://pwwang.com/technology/python/pychartdirector8/feed/ 0 PyChartDirector中文教程[7]：饼图的标签 http://pwwang.com/technology/python/pychartdirector_7_chartlabel/ http://pwwang.com/technology/python/pychartdirector_7_chartlabel/#comments Thu, 13 May 2010 08:26:38 +0000 pwwang http://pwwang.com/?p=922 Read More: 3627 Words Totally]]>  

下面我们看看如何用不同的方式来显示饼图的标签

1. 侧边标签层

先看看效果图:

标签的效果: 金属背景颜色, 圆角, 玻璃阴影效果

侧边标签层的标签将放置在图表的左侧和右侧

侧边标签层有一个好处, 那就是标签会自动上下排列, 防止交叠.

 

金色的背景由 pychartdir.goldColor产生

粉色金属背景由pychartdir.metalColor产生, 用Box.setBackground来设置标题TextBox的背景颜色

侧边标签层由PieChart.setLabelLayout来指定

玻璃效果由pychartdir.glassEffect来增加, 用Box.setBackground来分别指定

圆角标签用Box.setRoundedCorners来设置

 

如果数据中有些排序好的小值, 这个小值代表的块将会被放在一起, 这样标签就不需要太多的移动, 这个小值块更多的是在左边或者右边,而不是上边或者下边.

如果数据是降序排列的, 那么图的初始角度是顺时针135度,来保证那些小值块在45-135之间(在图的右边),  如果是升序, 则初始角度是45度.

代码:

 

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#!/usr/bin/python
from pychartdir import *
 
# The data for the pie chart
data = [35, 30, 25, 7, 6, 5, 4, 3, 2, 1]
 
# The labels for the pie chart
labels = ["Labor", "Production", "Facilities", "Taxes", "Misc", "Legal", "Insurance",
    "Licenses", "Transport", "Interest"]
 
# Create a PieChart object of size 560 x 270 pixels, with a golden background and a 1
# pixel 3D border
c = PieChart(560, 270, goldColor(), -1, 1)
 
# Add a title box using 15 pts Times Bold Italic font and metallic pink background
# color
c.addTitle("Project Cost Breakdown", "timesbi.ttf", 15).setBackground(metalColor(
    0xff9999))
 
# Set the center of the pie at (280, 135) and the radius to 110 pixels
c.setPieSize(280, 135, 110)
 
# Draw the pie in 3D with 20 pixels 3D depth
c.set3D(20)
 
# Use the side label layout method
c.setLabelLayout(SideLayout)
 
# Set the label box background color the same as the sector color, with glass effect,
# and with 5 pixels rounded corners
t = c.setLabelStyle()
t.setBackground(SameAsMainColor, Transparent, glassEffect())
t.setRoundedCorners(5)
 
# Set the border color of the sector the same color as the fill color. Set the line
# color of the join line to black (0x0)
c.setLineColor(SameAsMainColor, 0x000000)
 
# Set the start angle to 135 degrees may improve layout when there are many small
# sectors at the end of the data array (that is, data sorted in descending order). It
# is because this makes the small sectors position near the horizontal axis, where
# the text label has the least tendency to overlap. For data sorted in ascending
# order, a start angle of 45 degrees can be used instead.
c.setStartAngle(135)
 
# Set the pie data and the pie labels
c.setData(data, labels)
 
# Output the chart
c.makeChart("sidelabelpie.png")

 

2. 环形标签层

看效果图:

 

 这种环形标签有几种效果, 默认地是像最开始的例子那样,在图表的外面,紧挨着图.

Pie.setLabelPos可以用来控制标签与圆周之间的距离. 并可以在圆周和标签之间添加连接线, 当标签比较远的时候连接线是很有用的.

如果标签与圆周之间的距离是负值, 那么标签将会显示在圆周之内.

代码:

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#!/usr/bin/python
from pychartdir import *
 
def createChart(img) :
 
    # The data for the pie chart
    data = [42, 18, 8]
 
    # The labels for the pie chart
    labels = ["Agree", "Disagree", "Not Sure"]
 
    # The colors to use for the sectors
    colors = [0x66ff66, 0xff6666, 0xffff00]
 
    # Create a PieChart object of size 300 x 300 pixels. Set the background to a
    # gradient color from blue (aaccff) to sky blue (ffffff), with a grey (888888)
    # border. Use rounded corners and soft drop shadow.
    c = PieChart(300, 300)
    c.setBackground(c.linearGradientColor(0, 0, 0, c.getHeight() / 2, 0xaaccff,
        0xffffff), 0x888888)
    c.setRoundedFrame()
    c.setDropShadow()
 
    if img == "0" :
    #============================================================
    #    Draw a pie chart where the label is on top of the pie
    #============================================================
 
        # Set the center of the pie at (150, 150) and the radius to 120 pixels
        c.setPieSize(150, 150, 120)
 
        # Set the label position to -40 pixels from the perimeter of the pie (-ve
        # means label is inside the pie)
        c.setLabelPos(-40)
 
    else :
    #============================================================
    #    Draw a pie chart where the label is outside the pie
    #============================================================
 
        # Set the center of the pie at (150, 150) and the radius to 80 pixels
        c.setPieSize(150, 150, 80)
 
        # Set the sector label position to be 20 pixels from the pie. Use a join line
        # to connect the labels to the sectors.
        c.setLabelPos(20, LineColor)
 
 
    # Set the pie data and the pie labels
    c.setData(data, labels)
 
    # Set the sector colors
    c.setColors2(DataColor, colors)
 
    # Use local gradient shading, with a 1 pixel semi-transparent black (bb000000)
    # border
    c.setSectorStyle(LocalGradientShading, 0xbb000000L, 1)
 
    # Output the chart
    c.makeChart("circlelabelpie%s.png" % img)
 
 
createChart("0")
createChart("1")

]]> http://pwwang.com/technology/python/pychartdirector_7_chartlabel/feed/ 0 PyChartDirector中文教程[6]：多深度饼图 http://pwwang.com/technology/python/pychartdirector_note_mdepthpie/ http://pwwang.com/technology/python/pychartdirector_note_mdepthpie/#comments Mon, 10 May 2010 01:22:55 +0000 pwwang http://pwwang.com/?p=914 Read More: 1009 Words Totally]]>  

我们扩展了一下开始画的简单的饼图, 那还能不能再扩展一下呢,

能否画出不同尝试的3D效果呢?

我们看看这个效果图:

在这个例子中, 不再使用PieChart.set3D来画3D效果, 而是通过PieChart.set3D2来画图.

通过一个整数数组来指定不同区域的高度.

源代码如下:

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#!/usr/bin/python
from pychartdir import *
 
# The data for the pie chart
data = [72, 18, 15, 12]
 
# The labels for the pie chart
labels = ["Labor", "Machinery", "Facilities", "Computers"]
 
# The depths for the sectors
depths = [30, 20, 10, 10]
 
# Create a PieChart object of size 360 x 300 pixels, with a light blue (DDDDFF)
# background and a 1 pixel 3D border
c = PieChart(360, 300, 0xddddff, -1, 1)
 
# Set the center of the pie at (180, 175) and the radius to 100 pixels
c.setPieSize(180, 175, 100)
 
# Add a title box using 15 pts Times Bold Italic font and blue (AAAAFF) as background
# color
c.addTitle("Project Cost Breakdown", "timesbi.ttf", 15).setBackground(0xaaaaff)
 
# Set the pie data and the pie labels
c.setData(data, labels)
 
# Draw the pie in 3D with variable 3D depths, 指定不同区域的高度
c.set3D2(depths)
 
# Set the start angle to 225 degrees may improve layout when the depths of the sector
# are sorted in descending order, because it ensures the tallest sector is at the
# back.
c.setStartAngle(225)
 
# Output the chart
c.makeChart("multidepthpie.png")

]]> http://pwwang.com/technology/python/pychartdirector_note_mdepthpie/feed/ 1 PyChartDirector中文教程[5]：3D饼图 http://pwwang.com/technology/python/pychartdirector_note_3dpie/ http://pwwang.com/technology/python/pychartdirector_note_3dpie/#comments Fri, 07 May 2010 01:08:53 +0000 pwwang http://pwwang.com/?p=912 Read More: 710 Words Totally]]>  

前面我们画了一个非常简单的饼状图, 接下来,我们来扩展一下这个饼状图吧,

先看看我们扩展的这个3D饼图:

 

 

这个例子对先一个例子进行了扩展:

用BaseChart.addTitle添加了标题

用PieChart.set3D画3D图

用PieChart.setExplode展开其中的一块区域

源代码:

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#!/usr/bin/python
from pychartdir import *
 
# The data for the pie chart
data = [25, 18, 15, 12, 8, 30, 35]
 
# The labels for the pie chart
labels = ["Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities",
    "Production"]
 
# Create a PieChart object of size 360 x 300 pixels
c = PieChart(360, 300)
 
# Set the center of the pie at (180, 140) and the radius to 100 pixels
c.setPieSize(180, 140, 100)
 
# Add a title to the pie chart, 添加标题
c.addTitle("Project Cost Breakdown")
 
# Draw the pie in 3D, 3D模式
c.set3D()
 
# Set the pie data and the pie labels
c.setData(data, labels)
 
# Explode the 1st sector (index = 0)
c.setExplode(0)  #展开第一块区域
 
# Output the chart
c.makeChart("threedpie.png")

]]> http://pwwang.com/technology/python/pychartdirector_note_3dpie/feed/ 1 PyChartDirector中文教程[4]：简单的饼状图 http://pwwang.com/default/pychartdirector_note_4/ http://pwwang.com/default/pychartdirector_note_4/#comments Tue, 04 May 2010 08:34:37 +0000 pwwang http://pwwang.com/?p=907 Read More: 568 Words Totally]]>  

先来看看我们要画的这个最简单的饼状图吧:

 

这个例子展示了画饼状图的基本步骤:

用PieChart创建一个pie chart对象

用setPieSize指定中心和半径

为饼状图指定数据

用makeChart保存图像

我们先看一下源代码:

 

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#!/usr/bin/python
from pychartdir import *
 
# The data for the pie chart
data = [25, 18, 15, 12, 8, 30, 35]
 
# The labels for the pie chart
labels = ["Labor", "Licenses", "Taxes", "Legal", "Insurance", "Facilities",
    "Production"]
 
# Create a PieChart object of size 360 x 300 pixels
c = PieChart(360, 300)
 
# Set the center of the pie at (180, 140) and the radius to 100 pixels, 
# 圆心(180,140) 半径:100px
c.setPieSize(180, 140, 100)
 
# Set the pie data and the pie labels 
# 指定数据和标签
c.setData(data, labels)
 
# Output the chart
c.makeChart("simplepie.png")

 

简单吧!

 

]]> http://pwwang.com/default/pychartdirector_note_4/feed/ 0 PyChartDirector中文教程[3]：嵌入网页 http://pwwang.com/technology/python/pychartdirector_note_3/ http://pwwang.com/technology/python/pychartdirector_note_3/#comments Sat, 01 May 2010 08:12:14 +0000 pwwang http://pwwang.com/?p=901 Read More: 973 Words Totally]]>  

前面, 我们画了第一个图, 并把它保存到了文件, 下面我们看看怎么把它直接插入到网页中:

文件: pythondemo_cgi\simplebar.py

 

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#!/usr/bin/python
from pychartdir import *
 
# The data for the bar chart
data = [85, 156, 179.5, 211, 123]
 
# The labels for the bar chart
labels = ["Mon", "Tue", "Wed", "Thu", "Fri"]
 
# Create a XYChart object of size 250 x 250 pixels
c = XYChart(250, 250)
 
# Set the plotarea at (30, 20) and of size 200 x 200 pixels
c.setPlotArea(30, 20, 200, 200)
 
# Add a bar chart layer using the given data
c.addBarLayer(data)
 
# Set the labels on the x axis.
c.xAxis().setLabels(labels)
 
# Output the chart
print "Content-type: image/png\n"
binaryPrint(c.makeChart2(PNG))

 

代码中, 前面部分和hello world的例子相同, 只有后面这两句有所不同:

 

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print "Content-type: image/png\n"
binaryPrint(c.makeChart2(PNG))

 

这两句是输出一个MIME类型的头部, 并输出一个准备送往浏览器的二进制图片.

上面的代码只是生成了一个二进制图片,那么我们如果把它插入到网页中呢?

其实和普通的图片的插入方法是一样的:

 

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<HTML>
<BODY>
 
<h1>Hello World!</h1>
<p>Hi, this is my first web page with ChartDirector charts.</p>
 
<IMG SRC="http://aaa.bbb.ccc.ddd/cgi-bin/pythondemo_cgi/simplebar.py">
 
More HTML elements ......
 
</BODY>
</HTML>

 

 在后面的例子中, 我们将不再例举CGI的例子,

因为只要将保存成图片的例子最后的makechart改成生成二进制图片的代码就行了

]]> http://pwwang.com/technology/python/pychartdirector_note_3/feed/ 0 PyChartDirector中文教程[2]：Hello, world! http://pwwang.com/technology/python/pychartdirector_note_2/ http://pwwang.com/technology/python/pychartdirector_note_2/#comments Thu, 29 Apr 2010 05:47:33 +0000 pwwang http://pwwang.com/?p=894 Read More: 1105 Words Totally]]>  

 前面我们已经了解了ChartDirector，也从我给出的图表中感受了它的强大，它所支持的图表类型已经基本上能满足我们的要求。

那么我们下面来看一下ChartDirector的Hello, world程序（当然不是打印一个Hello world，而是画一个简单的图表，如果你要那么认为，我只能表示无语凝噎。。。）

我们要画的图就是我上一章给出的第一个图，一个简单的柱状图，我们再来看看它的美貌：

让我们来看看这个图是怎么画的吧：

 

 

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#!/usr/bin/python
from pychartdir import *
 
# The data for the bar chart
data = [85, 156, 179.5, 211, 123]
 
# The labels for the bar chart
labels = ["Mon", "Tue", "Wed", "Thu", "Fri"]
 
# Create a XYChart object of size 250 x 250 pixels
c = XYChart(250, 250)
 
# Set the plotarea at (30, 20) and of size 200 x 200 pixels
c.setPlotArea(30, 20, 200, 200)
 
# Add a bar chart layer using the given data
c.addBarLayer(data)
 
# Set the labels on the x axis.
c.xAxis().setLabels(labels)
 
# Output the chart
c.makeChart("simplebar.png")

 

解释一下代码：

 

from pychartdir import *
导入pychardir模块
c = XYChart(250, 250)

ChartDirector中创建一个图表对象的第一步。在这个例子中，创建了一个250X250像素的XYChart对象。在ChartDirector中XYChart表示任何有x轴和y轴的图表，就像我们画的图一样。

c.setPlotArea(30, 30, 200, 200)

第二步是指定画图的位置和大小，四个参数分别是x坐标（left），y坐标（top），长度和宽度。这里要注意的是你的x+width不要超过了你设置的图表的总宽度，还要预留一些位置给文字标记。

c.addBarLayer(data)

上面的这个代码将柱状加到图表中。在ChartDirector中，所有的xy图表类型都用一个层来表现。一个XYChart可以包含多个层。

c.xAxis().setLabels(labels)

设置X轴的标签。

c.makeChart("simplebar.png")

保存到文件。
支持的类型：PNG, JPG, GIF, BMP 和WBMP.

 

]]> http://pwwang.com/technology/python/pychartdirector_note_2/feed/ 0