graphics

Different precision on matplotlib axis

若如初见. 提交于 2021-02-07 07:12:06
问题 My teacher said that in a graph I must label the axis like 0, 0.25, 0.5 not 0.00,0.25,0.50,... . I know how to label it like 0.00,0.25,0.50 ( plt.yticks(np.arange(-1.5,1.5,.25)) ), however, I don't know how to plot the ticklabels with different precision. I've tried to do it like plt.yticks(np.arange(-2,2,1)) plt.yticks(np.arange(-2.25,2.25,1)) plt.yticks(np.arange(-1.5,2.5,1)) without avail. 回答1: This was already answered, for example here Matplotlib: Specify format of floats for tick lables

Algorithm to Fill In a Closed 2D Curve [closed]

橙三吉。 提交于 2021-02-07 03:52:35
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . Improve this question I need to find a way of drawing the inside of a closed 2D curve. This curve is actually created using a bicubic Bezier curve, but that's not important I believe. At the moment there should be no "holes" within the drawn shape. So it will just be totally filled in. It seems

Algorithm to Fill In a Closed 2D Curve [closed]

半城伤御伤魂 提交于 2021-02-07 03:47:43
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . Improve this question I need to find a way of drawing the inside of a closed 2D curve. This curve is actually created using a bicubic Bezier curve, but that's not important I believe. At the moment there should be no "holes" within the drawn shape. So it will just be totally filled in. It seems

Algorithm to Fill In a Closed 2D Curve [closed]

懵懂的女人 提交于 2021-02-07 03:46:27
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 6 years ago . Improve this question I need to find a way of drawing the inside of a closed 2D curve. This curve is actually created using a bicubic Bezier curve, but that's not important I believe. At the moment there should be no "holes" within the drawn shape. So it will just be totally filled in. It seems

What is the difference between Phong Shading and Gouraud Shading?

。_饼干妹妹 提交于 2021-02-05 06:34:26
问题 As I understand it, Gouraud shading calculates light color for each vertex and does interpolation on that color, whereas Phong shading interpolates the normal for each pixel and calculates light color based on that interpolated value. However, when I tried to derive the light color mathematically, I ended up with the same formula for both ways! (Where n1 and n2 are the normals of the two vertices, t is the coefficient for interpolation, L is the light direction, and the plane on the top and

Java Swing: Making a growing circle by mouse click on JPanel

你说的曾经没有我的故事 提交于 2021-01-29 22:39:32
问题 I'm a beginner in Java and this time I'm trying to learn more by finding code examples and editing them, for example from this website. I have a JFrame and each time it (or more precise the JPanel in it) is clicked on, a circle is drawn which will grow/expand outwards like a water ripple. Each circle starts with a certain radius and will be removed or redrawn when reaching a bigger radius (I chose radius "r" from 10 to 200). I have two programs for this which almost work but are missing

Java Swing: Making a growing circle by mouse click on JPanel

我的未来我决定 提交于 2021-01-29 22:26:05
问题 I'm a beginner in Java and this time I'm trying to learn more by finding code examples and editing them, for example from this website. I have a JFrame and each time it (or more precise the JPanel in it) is clicked on, a circle is drawn which will grow/expand outwards like a water ripple. Each circle starts with a certain radius and will be removed or redrawn when reaching a bigger radius (I chose radius "r" from 10 to 200). I have two programs for this which almost work but are missing

Java questions about coordinates with Graphics

Deadly 提交于 2021-01-29 13:13:50
问题 If I create a JFrame 800x600 pixels and draw a line from (0,0) to (800,600) it doesn't go from corner to corner, so, where is the (0,0) and where is the (800,600)? Here is the code import java.awt.Graphics; import javax.swing.JFrame; public class Point0_0test extends JFrame { public Point0_0test() { setTitle("Test"); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setSize(800, 600); setLocationRelativeTo(null); } @Override public void paint(Graphics g) { super.paint(g); g.drawLine(0, 0, 800,

Convert RGB Color to HEX color

。_饼干妹妹 提交于 2021-01-29 11:05:35
问题 I am taking a color from an ImageView using OnTouchListener . Red, Green, Blue color code can be successfully obtained, but i cant convert RGB to HEX .. example : my rgb values are r:21 b:16 g:228 and curresponding hex color is #15e410. i want get #15e410. from r:21 ,b:16 ,g:228 int pixel = bitmap.getPixel(x,y); int redValue = Color.red(pixel); int blueValue = Color.blue(pixel); int greenValue = Color.green(pixel); int hexa= Color.rgb(redValue, greenValue, blueValue); Toast.makeText

Exporting data from R into an Excel File that contains a graphic with additional text causes the graphic to be deleted

那年仲夏 提交于 2021-01-29 06:50:47
问题 I have trouble when exporting data from R into an Excel file containing a graphic with additional text. The problem is relatively specific. So I have a datatable in R, like this one : library(lubridate) library(dplyr) library(data.table) library(openxlsx) Sys.setenv(LANGUAGE='en') MWE <- data.table( Date=rep(seq(ymd("2020-1-1"), ymd("2020-3-30"), by = "days")), Country1=rnorm(90,2,3), Country2=rnorm(90,2,3)) I then export it in an Excel file using an openxlsx option Fichier <- loadWorkbook(