Turn http://www.cnblogs.com/jiangmiaomiao/p/6991632.html0 IntroductionR supports 4 types of graphics: base graphics, grid graphics, lattice graphics, Ggplot2. Where the Base graphics is the default graphics system for R.1 Basic graphics Functions plot ()The type parameter in the plot () command is used to clarify how the drawing is drawn, using the following type values:
"P" for "points"
"L" for "lines"
"O" for "overlaid" (e.g., lines
The Kolourpaint 4 Drawing tool is simple and practical and can be used for painting, video processing and icon editing:•Painting: Drawing charts and "Freehand"• Video processing: editing and photo; applying effects•Icon editing: Painting clip and logo transparency1. In Ubuntu 16.10 System, install Kolourpaint 4 drawing tool:sudo apt-get Install 2. After the inst
Paint, as a common feature in Windows systems, is further enhanced in Windows7 with its interface and functionality, which can be used to create drawings on a blank drawing area or on an existing picture. The following describes the WINDOWS7 system in the view of drawing in the picture.
1, Fast zoom picture
First of all, using paint to open the picture, if the original size of the picture is large, you ca
In the process of using UG software drawing, sometimes the drawing files can not be saved; When encountered this situation, if not handled well, it is necessary to from the preservation of that step back to design, in this experience, to explain to everyone I encountered in the UG drawing files can not be saved when the solution.
1, in the use of UG9.0
In the previous piece has been introduced to you how to use GDI + to draw a simple image, this piece continues to introduce some other drawing knowledge.
1. First, let's look at the pen we used in the last piece.
Pen properties are mainly: color (color), dashcap (dash End shape), dashstyle (dotted style), endcap (line End shape), startcap (thread shape), Width (thickness), and so on.
We can use pen to draw dashes, lines with arrows, etc.
Pen p = n
Before the tutorial we gave examples of the proposition: known: trapezoid ABCD, Ad∥bc,ab=ad+bc,e is the midpoint of the CD. Verification: AE, be divided equally ∠bad, ∠abc.
The converse proposition of the proposition is: in the trapezoid abcd, the Ad∥bc,∠dab and the ∠CBA of the intersection point E, and point e happens to be on the waist CD. Then: Ab=ad+bc,e is the midpoint of the CD.
Obviously, we can learn about ∠aeb=90°. As shown in the following figure, the midpoint of the segment AB is th
My study notes are mainly recorded in the study opencv-python-tutorials the book of the NotesThis evening learn how OpenCV for Python plots, mainly using these functions (these functions can be in: http://docs.opencv.org/modules/core/doc/drawing_functions.html Found):Start by copying the code from the book, the code is as follows:Import NumPy as NP Import = Np.zeros (512,512,3= Cv2.line (IMG, (), (510,510), (255,0,0), 5= Cv2.rectangle (IMG, ( 200,100), (100,200), (0,255,0), 3= Cv2.circle (img,
To give you illustrator software users to detailed analysis to share the drawing of linear fringe geometric art patterns of the tutorial.
Tutorial Sharing:
First, create art brushes
To make a stripe pattern, the first thing we need to think about is what tools are used to achieve it more quickly. Because such as stripes, dots, squares ... This kind of basic pattern has the common character that repeats a certain visual law
To the users of the painter software to the detailed analysis of the painting to share the effect of the tutorial.
Tutorial Sharing:
1. Create a new 800x600 pixel file.
2. Add a new normal layer, set composite method for gel.
3. Double-click the new layer, and in the Out Layer property panel, name the layer "XM" (line Drawing). Use the pencils/2b pencil brush, and then select a light gray in the colors panel, sele
June has been busy in the final exam, today to quickly learn the Ggplot2 package of simple drawing.There are also many drawing functions in the base package of R, such as plot (); Barplot (); Qqplot ();But there is also the famous Ggplot2 bag, using the function of this package to draw a beautiful picture, and the use of flexible.
In Ggplot's Official Handbook, a statistical graph is made up of data to geometric objects (geometric object, recorded as
The MATLAB Help document is as follows:
Hold on holds the current plot and all axis properties, including the current color and linestyle, so that subsequent grap Hing commands Add to the existing graph without resetting the color and LineStyle. Hold OFF returns to the default mode whereby PLOT commands erase the previous plots and reset all axis properties before D Rawing new plots.
corresponding translationhold on: maintains the current drawing an
The iOS view mechanism, referring to the iOS view box can be drawn by DrawRect itself, each view of the layer (Calayer) is like a view of the projection, in fact, we can also manipulate it to customize a view, such as a translucent rounded background view.To complete your drawing on the view, be sure to look at the drawing mechanism of iOS. Today I'm trying to talk about iOS
Cgcontextref context = Uigraphicsgetcurrentcontext (); Setting the contextDraw a lineCgcontextsetstrokecolorwithcolor (context, [Uicolor Redcolor]. Cgcolor);//Line ColorCgcontextsetlinewidth (context, 5.0);//Line widthCgcontextmovetopoint (Context, 20, 20); Start drawing line, X, y as the start point coordinatesCgcontextaddlinetopoint (context, 300, 20);//Draw a straight line, X, y is the coordinate of the line end pointCgcontextstrokepath (context);
calculation results are saved by setmeasureddimension (width, height).2. Layout operationThe layout action is used to set where the view appears on the screen. Defined as the final type in view, requires that the subclass cannot be modified. There are two basic operations in the layout () function:(1) setframe (l,t,r,b), l,t,r,b the specific position of the child view in the parent view, which is used to save these parameters;(2) OnLayout (), in view, this function does nothing, provided the fu
property contentscalefactor that identifies how many pixels a point containsB. Coordinate System Properties: (CGRect) bounds, (cgpoint) center, (cgrect) frame For view B:bounds = ((0,0), (200,250))frame = ((140,65), (320,320))Center = (300,225)Here you understand the concept that a view can be rotated in a parent view.Creating a ⑥ ViewStoryboard:dragCode:alloc initWithFrame (directly initialized to frame = Cgrectzero by using init)1 cgrect labelrect = CGRectMake (a); 2 UILabel *label =3
We assume that in the RGB video on the drawing (straight, rectangular, etc.), generally adopt a double buffer to continue, using memory MEMORYDC, to achieve the picture on the video display does not blink, but we know that the RGB display video is using GDI to render, which is very CPU-consuming, Then we can be in YUV video rendering, the answer is yes, using DDraw Direct display YUV is OK, can support yuv422 and yuv420 directly using the graphics car
In the previous articles we analyzed the activity and dialog loading drawing process, cancel the drawing process, I believe you have a perceptual understanding of the Windows drawing mechanism of the Android system, this article we will continue to analyze the Popupwindow loading drawing process.Before we analyze Popup
OverviewIn the previous article, the drawing process of the Android view (top)--view The measure process of the view is described in detail. For the entire process of drawing the view, after measuring the size of the view, you start to determine the location of the view and draw it to the screen. The layout and draw process of the view. So take a look at how these two processes are implemented.the layout pr
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