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  • QUARTZ2Z画扇形

    2016-08-25 10:18:00
    2019独角兽企业重金招聘Python工程师标准>>> ...

    101429_naDm_2841440.png

     

    画扇形

    转载于:https://my.oschina.net/18829297883/blog/737562

    展开全文
  • 函数图像 先来看几个栗子: 绘制y=2sinx+cosx的曲线,横坐标为[-3pi,3pi],曲线为红色 import matplotlib.pyplot as plt import numpy as np x=np.linspace(-3*np.pi,3*np.pi,256,endpoint=80) #图像横坐标范围 y=...

    画函数图像

    先来看几个栗子:

    绘制y=2sinx+cosx的曲线,横坐标为[-3pi,3pi],曲线为红色

    import matplotlib.pyplot as plt
    import numpy as np
    
    x=np.linspace(-3*np.pi,3*np.pi,256,endpoint=80) #图像横坐标范围
    y=np.sin(x)*2+np.cos(x)
    plt.xlim(-3*np.pi,3*np.pi) #坐标轴横坐标取值范围
    
    plt.plot(x,y,color='red',linewidth=5,linestyle='-') #根据x y 数组绘制直线曲线
    plt.show()
    

    在这里插入图片描述
    一个图里两个图像的:

    import numpy as np
    import matplotlib.pyplot as plt
    import math
    
    x=np.linspace(-np.pi,np.pi,256,endpoint=80)
    y1=np.cos(2*np.pi*x)
    y2=1/(math.e**x)*np.cos(2*np.pi*x)
    
    plt.plot(x,y1,label="y1=cos(2*pi*x)")
    plt.plot(x,y2,label='(1/e**x)*cos(2*pi*x)')
    plt.legend(loc=1)
    plt.xlabel('x')
    plt.ylabel('y')
    
    plt.show()
    

    在这里插入图片描述

    扇形图

    #-*- coding: utf-8 -*-
    from matplotlib import pyplot as plt
    plt.rcParams['font.sans-serif']=['SimHei'] #解决中文乱码
    
    plt.figure(figsize=(6,9)) #调节图形大小
    labels = [u'Dogs',u'Hogs',u'Frogs',u'Logs'] #定义标签
    sizes = [45, 30, 15, 10] #每块值
    colors = ['green', 'yellow', 'blue', 'red'] #每块颜色定义
    explode = (0,0,0,0) #将某一块分割出来,值越大分割出的间隙越大
    patches,text1,text2 = plt.pie(sizes,
                          explode=explode,
                          labels=labels,
                          colors=colors,
                          autopct = '%3.2f%%', #数值保留固定小数位
                          shadow = False, #无阴影设置
                          startangle =90, #逆时针起始角度设置
                          pctdistance = 0.6) #数值距圆心半径倍数距离
    #patches饼图的返回值,texts1饼图外label的文本,texts2饼图内部的文本
    # x,y轴刻度设置一致,保证饼图为圆形
    plt.axis('equal')
    plt.legend() # 右上角显示
    plt.show()
    
    

    在这里插入图片描述
    有阴影

    shadow = True, #有阴影设置

    plt.figure(figsize=(6,9)) #调节图形大小
    plt.figure(figsize=(6,9)) #调节图形大小
    labels = [u'Dogs',u'Hogs',u'Frogs',u'Logs'] #定义标签
    sizes = [45, 30, 15, 10] #每块值
    colors = ['green', 'yellow', 'blue', 'red'] #每块颜色定义
    patches,text1,text2 = plt.pie(sizes,
                          explode=explode,
                          labels=labels,
                          colors=colors,
                          autopct = '%3.2f%%', #数值保留固定小数位
                          shadow = True, #有阴影设置
                          startangle =90, #逆时针起始角度设置
                          pctdistance = 0.6) #数值距圆心半径倍数的距离
    #patches饼图的返回值,texts1饼图外label的文本,texts2饼图内部的文本
    # x,y轴刻度设置一致,保证饼图为圆形
    plt.axis('equal')
    plt.show()
    
    

    在这里插入图片描述
    分隔开

    explode=(0, 0.07, 0, 0)

    plt.figure(figsize=(6,9)) #调节图形大小
    labels = [u'Frogs', u'Hogs', u'Dogs', u'Logs'] #定义标签
    sizes = [15, 30, 45, 10] #每块值
    colors = ['blue', 'orange', 'green', 'red'] #每块颜色定义
    explode=(0, 0.07, 0, 0) 
    patches,text1,text2 = plt.pie(sizes,
                          explode=explode,
                          labels=labels,
                          colors=colors,
                          labeldistance = 1.2,#图例距圆心半径倍距离  
                          autopct = '%3.2f%%', #数值保留固定小数位
                          shadow = False, #无阴影
                          startangle =90, #逆时针起始角度设置
                          pctdistance = 0.6) #数值距圆心半径倍数距离
    #patches饼图的返回值,texts1饼图外label的文本,texts2饼图内部文本
    # x,y轴刻度设置一致,保证饼图为圆形
    plt.axis('equal')
    plt.show()
    
    

    在这里插入图片描述

    展开全文
  • Quartz 2D(二)画扇形

    2016-08-25 19:34:00
    2019独角兽企业重金招聘Python工程师标准>>> ...

    //   画扇形

        CGContextRef contest=UIGraphicsGetCurrentContext();

        CGContextAddArc(contest, 200, 200, 70, 0, 1.5,1);

        CGContextAddLineToPoint(contest, 200, 200);

        [[UIColor redColor]set];

        [[UIColor greenColor]setFill];

        CGContextSetLineWidth(contest, 8);

         CGContextClosePath(contest);

        CGContextDrawPath(contest, kCGPathFillStroke);

        CGContextStrokePath(contest);

    192542_nJ4S_2841440.png

    2.

    //    画曲线

        

         CGContextRef contest1=UIGraphicsGetCurrentContext();

        

        CGContextMoveToPoint(contest1, 10, 10);

        CGContextAddCurveToPoint(contest1, self.frame.size.width/4, self.frame.size.height/3, self.frame.size.width/2, self.frame.size.height/8, self.frame.size.width/5, self.frame.size.height/6);

        [[UIColor yellowColor]set];

        CGContextSetLineWidth(contest1, 5);

        CGContextStrokePath(contest1);

     

    192630_nAEM_2841440.png

    //    裁剪

          UIImage *image1=[UIImage imageNamed:@"1.jpg"];

         UIGraphicsBeginImageContext(image1.size);

          CGContextRef contest1=UIGraphicsGetCurrentContext();

            

        CGContextAddEllipseInRect(contest1, CGRectMake(0, 0, self.frame.size.width,self.frame.size.width*2) );

        CGContextClip(contest1);

            [image1 drawAtPoint:CGPointZero];

        UIImage *newImage=UIGraphicsGetImageFromCurrentImageContext();

        UIImageView *imageView=[[UIImageView alloc]initWithFrame:CGRectMake(self.frame.size.width/2-100, self.frame.size.height/2 , image1.size.width/3,image1.size.width/5) ];

        imageView.image=newImage;

        [self addSubview:imageView];

         UIGraphicsEndPDFContext();

    192941_JGTL_2841440.png

    5.

    添加文字

    CGContextRef context=UIGraphicsGetCurrentContext();

        CGContextSetLineWidth(context, 5);

        CGContextSetRGBFillColor(context, 1, 1, 1, 0.5);

        UIFont *front=[UIFont boldSystemFontOfSize:23];

        [@"马自达"drawInRect:CGRectMake(20, 20, 20, 20) withFont:front];

        CGContextStrokePath(context);

    193156_ujqq_2841440.png

    6.

    //水印

    //背景图片

        UIImage *carimage=[UIImage imageNamed:@"1.JPG"];

        UIGraphicsBeginImageContextWithOptions(carimage.size, NO, 0);

        [carimage drawInRect:CGRectMake(0, 0, carimage.size.width, carimage.size.height)];

    //  水印图片

        UIImage *waterimage=[UIImage imageNamed:@"2.png"];

    //    [@"你好" drawInRect CGRectMake(30, 30, 40, 40)];

       [waterimage drawInRect:CGRectMake(carimage.size.width-waterimage.size.width,carimage.size.height-waterimage.size.width,waterimage.size.width , waterimage.size.width) blendMode:kCGBlendModeNormal alpha:1];

        

        UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();

    //    UIFont *front=[UIFont boldSystemFontOfSize:17];

    //    [@"马自达" drawin];

     

        UIImageView *imageview=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0, self.frame.size.width,self.frame.size.height)];

        imageview.image=newImage;

        

        [self addSubview:imageview];

       UIGraphicsEndImageContext();

     

     

    193335_dcMw_2841440.png

     

     

     

    转载于:https://my.oschina.net/18829297883/blog/737956

    展开全文
  • 最终效果 步骤 py源码 Register_Panel.py from PyQt5.Qt import * from resource.register_ui import Ui_Form class Window(QWidget,Ui_Form): ... self.setAttribute(Qt.WA_StyledBackground,True) self.se

    最终效果

    在这里插入图片描述

    步骤

    在这里插入图片描述
    在这里插入图片描述
    在这里插入图片描述
    在这里插入图片描述
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    在这里插入图片描述
    在这里插入图片描述

    py源码

    Register_Panel.py

    from PyQt5.Qt import *
    from resource.register_ui import Ui_Form
    
    class Window(QWidget,Ui_Form):
        def __init__(self):
            super().__init__()
            self.setAttribute(Qt.WA_StyledBackground,True)
            self.setupUi(self)
            self.animation_targets = [self.about_menu_btn,self.reset_menu_btn,self.exit_menu_btn]
            self.animation_targets_pos = [target.pos() for target in self.animation_targets]
    
        def show_hide_menu(self, checked):
            print("显示和隐藏", checked)
            animation_group = QSequentialAnimationGroup(self)
            for idx,target in enumerate(self.animation_targets):
                animation = QPropertyAnimation()
                animation.setTargetObject(target)
                animation.setPropertyName(b"pos")
                # if not checked:
                animation.setStartValue(self.main_menu_btn.pos())
                animation.setEndValue(self.animation_targets_pos[idx])
                # else:
                #     animation.setEndValue(self.main_menu_btn.pos())
                #     animation.setStartValue(self.animation_targets_pos[idx])
                animation.setDuration(200)
                animation.setEasingCurve(QEasingCurve.OutBounce)
                animation_group.addAnimation(animation)
                # if not checked:
                #     animation_group.setDirection(QAbstractAnimation.Forward)
                # else:
                #     animation_group.setDirection(QAbstractAnimation.Backward)
                # 将上述注释部分的代码层层优化后 得到下面的代码
                animation_group.setDirection(checked)
            animation_group.start(QAbstractAnimation.DeleteWhenStopped)
    
        def about(self):
            print("关于")
            QMessageBox.about(self,"学亮编程手记","https://blog.csdn.net/a772304419")
    
        def reset(self):
            print("重置")
            self.account_le.clear()
            self.password_le.clear()
            self.confirm_pwd_le.clear()
    
        def exit_panel(self):
            print("退出")
    
        def check_register(self):
            print("注册")
    
        def enable_register_btn(self):
            print("判定")
            accout_txt = self.account_le.text()
            password_txt = self.password_le.text()
            confirm_pwd_txt = self.confirm_pwd_le.text()
            if len(accout_txt)>0 and len(password_txt)>0 and len(confirm_pwd_txt)>0 and password_txt == confirm_pwd_txt:
                self.register_btn.setEnabled(True)
            else:
                self.register_btn.setEnabled(False)
    
    if __name__ == '__main__':
        import sys
        app = QApplication(sys.argv)
        window = Window()
        window.show()
        sys.exit(app.exec_())
    

    register_ui.py

    # -*- coding: utf-8 -*-
    
    # Form implementation generated from reading ui file 'register.ui'
    #
    # Created by: PyQt5 UI code generator 5.15.1
    #
    # WARNING: Any manual changes made to this file will be lost when pyuic5 is
    # run again.  Do not edit this file unless you know what you are doing.
    
    
    from PyQt5 import QtCore, QtGui, QtWidgets
    
    
    class Ui_Form(object):
        def setupUi(self, Form):
            Form.setObjectName("Form")
            Form.resize(500, 450)
            Form.setMinimumSize(QtCore.QSize(500, 450))
            Form.setMaximumSize(QtCore.QSize(500, 450))
            Form.setStyleSheet("QWidget#Form{\n"
    "    border-image: url(:/register/images/register_bg.jpg);\n"
    "}")
            self.main_menu_btn = QtWidgets.QPushButton(Form)
            self.main_menu_btn.setGeometry(QtCore.QRect(30, 50, 50, 50))
            self.main_menu_btn.setStyleSheet("QPushButton {\n"
    "    font: 10pt \"楷体\";\n"
    "    border-radius: 25px;\n"
    "    background-color: rgb(254, 83, 123);\n"
    "    border: 2px solid rgb(217, 166, 169);\n"
    "    color:white;\n"
    "}\n"
    "QPushButton:hover {\n"
    "    border: 4px double rgb(223, 188, 193);\n"
    "}\n"
    "QPushButton:checked {\n"
    "    background-color: rgb(154, 199, 232);\n"
    "}")
            self.main_menu_btn.setCheckable(True)
            self.main_menu_btn.setChecked(False)
            self.main_menu_btn.setObjectName("main_menu_btn")
            self.about_menu_btn = QtWidgets.QPushButton(Form)
            self.about_menu_btn.setGeometry(QtCore.QRect(90, 0, 50, 50))
            self.about_menu_btn.setStyleSheet("QPushButton {\n"
    "    font: 10pt \"楷体\";\n"
    "    border-radius: 25px;\n"
    "    background-color: rgb(254, 83, 123);\n"
    "    border: 2px solid rgb(217, 166, 169);\n"
    "    color:white;\n"
    "}\n"
    "QPushButton:hover {\n"
    "    border: 4px double rgb(223, 188, 193);\n"
    "}\n"
    "QPushButton:checked {\n"
    "    background-color: rgb(154, 199, 232);\n"
    "}")
            self.about_menu_btn.setCheckable(False)
            self.about_menu_btn.setChecked(False)
            self.about_menu_btn.setObjectName("about_menu_btn")
            self.reset_menu_btn = QtWidgets.QPushButton(Form)
            self.reset_menu_btn.setGeometry(QtCore.QRect(100, 70, 50, 50))
            self.reset_menu_btn.setStyleSheet("QPushButton {\n"
    "    font: 10pt \"楷体\";\n"
    "    border-radius: 25px;\n"
    "    background-color: rgb(254, 83, 123);\n"
    "    border: 2px solid rgb(217, 166, 169);\n"
    "    color:white;\n"
    "}\n"
    "QPushButton:hover {\n"
    "    border: 4px double rgb(223, 188, 193);\n"
    "}\n"
    "QPushButton:checked {\n"
    "    background-color: rgb(154, 199, 232);\n"
    "}")
            self.reset_menu_btn.setCheckable(False)
            self.reset_menu_btn.setChecked(False)
            self.reset_menu_btn.setObjectName("reset_menu_btn")
            self.exit_menu_btn = QtWidgets.QPushButton(Form)
            self.exit_menu_btn.setGeometry(QtCore.QRect(50, 120, 50, 50))
            self.exit_menu_btn.setStyleSheet("QPushButton {\n"
    "    font: 10pt \"楷体\";\n"
    "    border-radius: 25px;\n"
    "    background-color: rgb(254, 83, 123);\n"
    "    border: 2px solid rgb(217, 166, 169);\n"
    "    color:white;\n"
    "}\n"
    "QPushButton:hover {\n"
    "    border: 4px double rgb(223, 188, 193);\n"
    "}\n"
    "QPushButton:checked {\n"
    "    background-color: rgb(154, 199, 232);\n"
    "}")
            self.exit_menu_btn.setCheckable(False)
            self.exit_menu_btn.setChecked(False)
            self.exit_menu_btn.setObjectName("exit_menu_btn")
            self.layoutWidget = QtWidgets.QWidget(Form)
            self.layoutWidget.setGeometry(QtCore.QRect(180, 200, 281, 212))
            self.layoutWidget.setObjectName("layoutWidget")
            self.formLayout = QtWidgets.QFormLayout(self.layoutWidget)
            self.formLayout.setContentsMargins(0, 0, 0, 0)
            self.formLayout.setVerticalSpacing(20)
            self.formLayout.setObjectName("formLayout")
            self.label = QtWidgets.QLabel(self.layoutWidget)
            self.label.setStyleSheet("color: rgb(170, 0, 0);\n"
    "font: 12pt \"楷体\";")
            self.label.setObjectName("label")
            self.formLayout.setWidget(0, QtWidgets.QFormLayout.LabelRole, self.label)
            self.account_le = QtWidgets.QLineEdit(self.layoutWidget)
            self.account_le.setMinimumSize(QtCore.QSize(0, 35))
            self.account_le.setStyleSheet("background-color: transparent;\n"
    "color: rgb(255, 85, 127);\n"
    "border: none;\n"
    "border-left: 1px solid rgb(170, 0, 0);")
            self.account_le.setClearButtonEnabled(True)
            self.account_le.setObjectName("account_le")
            self.formLayout.setWidget(0, QtWidgets.QFormLayout.FieldRole, self.account_le)
            self.label_2 = QtWidgets.QLabel(self.layoutWidget)
            self.label_2.setStyleSheet("color: rgb(170, 0, 0);\n"
    "font: 12pt \"楷体\";")
            self.label_2.setObjectName("label_2")
            self.formLayout.setWidget(1, QtWidgets.QFormLayout.LabelRole, self.label_2)
            self.password_le = QtWidgets.QLineEdit(self.layoutWidget)
            self.password_le.setMinimumSize(QtCore.QSize(0, 35))
            self.password_le.setStyleSheet("background-color: transparent;\n"
    "color: rgb(255, 85, 127);\n"
    "border: none;\n"
    "border-left: 1px solid rgb(170, 0, 0);")
            self.password_le.setClearButtonEnabled(True)
            self.password_le.setObjectName("password_le")
            self.formLayout.setWidget(1, QtWidgets.QFormLayout.FieldRole, self.password_le)
            self.label_3 = QtWidgets.QLabel(self.layoutWidget)
            self.label_3.setStyleSheet("color: rgb(170, 0, 0);\n"
    "font: 12pt \"楷体\";")
            self.label_3.setObjectName("label_3")
            self.formLayout.setWidget(2, QtWidgets.QFormLayout.LabelRole, self.label_3)
            self.confirm_pwd_le = QtWidgets.QLineEdit(self.layoutWidget)
            self.confirm_pwd_le.setMinimumSize(QtCore.QSize(0, 35))
            self.confirm_pwd_le.setStyleSheet("background-color: transparent;\n"
    "color: rgb(255, 85, 127);\n"
    "border: none;\n"
    "border-left: 1px solid rgb(170, 0, 0);")
            self.confirm_pwd_le.setClearButtonEnabled(True)
            self.confirm_pwd_le.setObjectName("confirm_pwd_le")
            self.formLayout.setWidget(2, QtWidgets.QFormLayout.FieldRole, self.confirm_pwd_le)
            self.register_btn = QtWidgets.QPushButton(self.layoutWidget)
            self.register_btn.setEnabled(False)
            self.register_btn.setMinimumSize(QtCore.QSize(0, 45))
            self.register_btn.setStyleSheet("QPushButton {\n"
    "    font: 14pt \"楷体\";\n"
    "    color: white;\n"
    "    background-color: rgb(254, 83, 123);\n"
    "    border-radius:10px;\n"
    "}\n"
    "QPushButton:disabled {\n"
    "    background-color: rgb(203, 203, 203);\n"
    "}\n"
    "\n"
    "QPushButton:hover {\n"
    "    background-color: rgb(254, 53, 66);\n"
    "}\n"
    "\n"
    "QPushButton:pressed {\n"
    "    background-color: rgb(181, 24, 49);\n"
    "}")
            self.register_btn.setObjectName("register_btn")
            self.formLayout.setWidget(3, QtWidgets.QFormLayout.SpanningRole, self.register_btn)
            self.about_menu_btn.raise_()
            self.reset_menu_btn.raise_()
            self.exit_menu_btn.raise_()
            self.layoutWidget.raise_()
            self.main_menu_btn.raise_()
    
            self.retranslateUi(Form)
            self.main_menu_btn.clicked['bool'].connect(Form.show_hide_menu)
            self.about_menu_btn.clicked.connect(Form.about)
            self.reset_menu_btn.clicked.connect(Form.reset)
            self.exit_menu_btn.clicked.connect(Form.exit_panel)
            self.register_btn.clicked.connect(Form.check_register)
            self.account_le.textChanged['QString'].connect(Form.enable_register_btn)
            self.password_le.textChanged['QString'].connect(Form.enable_register_btn)
            self.confirm_pwd_le.textChanged['QString'].connect(Form.enable_register_btn)
            QtCore.QMetaObject.connectSlotsByName(Form)
    
        def retranslateUi(self, Form):
            _translate = QtCore.QCoreApplication.translate
            Form.setWindowTitle(_translate("Form", "Form"))
            self.main_menu_btn.setText(_translate("Form", "菜单"))
            self.about_menu_btn.setText(_translate("Form", "关于"))
            self.reset_menu_btn.setText(_translate("Form", "重置"))
            self.exit_menu_btn.setText(_translate("Form", "退出"))
            self.label.setText(_translate("Form", "账    号:"))
            self.account_le.setText(_translate("Form", "111111"))
            self.label_2.setText(_translate("Form", "密    码:"))
            self.password_le.setText(_translate("Form", "111111"))
            self.label_3.setText(_translate("Form", "确认密码:"))
            self.confirm_pwd_le.setText(_translate("Form", "111111"))
            self.register_btn.setText(_translate("Form", "注    册"))
    import images_rc
    
    
    if __name__ == "__main__":
        import sys
        app = QtWidgets.QApplication(sys.argv)
        Form = QtWidgets.QWidget()
        ui = Ui_Form()
        ui.setupUi(Form)
        Form.show()
        sys.exit(app.exec_())
    
    
    展开全文
  • 如果出来的拟合曲线图片如下所示 这个问题我的设想是画图的(x, y)存在大量的重复点 知道了这个之后就非常简单了 我在线性回归完成后画图时先把最终的x和y组合成了一个列表,然后去掉这个列表里面所有重复的...
  • python-007-可视化数据-扇形-2020-7-14 目录一、效果二、代码 一、效果 二、代码 # -*- coding: UTF-8 -*- import matplotlib.pyplot as plt plt.rcParams['font.sans-serif']=['SimHei'] #用来正常显示中文标签 ...
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