Geometric vector: A vector is a quantity with direction and magnitude. A vector whose size is called modulus, denoted as, or abbreviated as A, and whose modulus is 1 is called unit vector. A vector with a modulus of 0 is called a zero vector. A vector can be geometrically described by a line segment with an arrow. The length of a line segment indicates its module, and the arrow points to a certain space as its direction.
Vector graphics use straight lines and curves to describe graphics. With the help of vector drawing software such as Illustrator and CorelDraw, and with some basic skills, you can draw various illustrations of fashion figures. ...
Vector sum is a method or concept of vector analysis in mathematics. They are the same concept, but they are called differently. A simple definition refers to a quantity with both size and direction. In the electrical field, it is mainly used for the analysis of AC power supply, such as motor analysis. And its application in frequency converter is based on the theory of motor analysis, which is called vector control frequency converter. The realization method is not unique, but the mathematical model is basically the same.
If it is a vector-controlled inverter, most of the new universal inverters have the so-called excavator function, that is, when the inverter controls the motor to run at a low speed (for example, 5HZ), such as when the load on the motor increases, the speed of the motor will not decrease, but some of them have a little transient process, which generally will not affect the system work.
Time vector-sinusoidal variation at any time.
Sorry, landlord, that's all I found. I hope it helps you.
This is illustrator's tutorial.
Illustrator software introduction:
AdobeIllustrator is the industry standard vector illustration software for publishing, multimedia and online images. Whether you are a designer and professional illustrator who makes printed and published line drafts, an artist who makes multimedia images, or a producer of Internet pages or web content, you will find that illustration is more than just an art product tool. This software provides unparalleled accuracy and control for your line drawing, and is suitable for making any small design to large-scale complex projects.
Illustrator, as the most famous graphics software in the world, has occupied most vector editing software in the world with its powerful functions and considerate user interface. According to incomplete statistics, 67% of designers around the world are using Illustrator for artistic design! Especially the application of PostScript technology based on Adobe patent, Illustrator has completely occupied the field of professional printing and publishing. Whether you are a designer of line drawing and a professional Illustrator, an artist who makes multimedia images, or a producer of Internet pages or network content, you will find that its powerful functions and simple interface design style are incomparable with other similar software after using Illustrator! With the continuous development of network technology, Adobe is constantly adjusting the development direction of its products, and many new functions of Illustrator 10 have greatly strengthened its position in web design. Whether it is the final output of images on the web page or the release of vector graphics on the web page (SVG technology), Adobe attaches importance to network development!
As the sister software of Adobe's famous image processing software Photoshop, it has not been paid attention to by domestic graphic designers because there is no official agent of Adobe for a long time in China, and Coreldraw, the famous drawing software of Core Company, has been replaced by it. It should be said that Coreldraw is also an excellent vector drawing software, which is famous for its rich functions and is very suitable for users who are quite familiar with Window. However, as the standard of printing and publishing industry, if it is used in conjunction with Photoshop, it is inevitable to import and export each other. The standard vector tools that are really used in the publishing industry are Illustrator and Freehand (note: only a few printing and publishing companies use Coreldraw of Mac).
Start screen
Illustrator has not been popular for a long time, mainly because Illustrator is a professional drawing software that appears on the Mac. It was not until the release of the 7.0PC version that domestic users paid attention to it. Moreover, its high system requirements and expensive professional equipment discourage ordinary users, so it is generally only used by large foreign advertising companies in Europe, America and Japan. However, with the continuous price reduction and configuration upgrade of PCs, these professional-grade software can now be used on PCs.
Illustrator development process
Adobe introduced Illustrator 1. 1 in 1987 earlier. The following year, the Windows platform launched version 2.0. Illustrator really started at 1988, with the release of Illustrator88 on Mac. The following year, it was upgraded to version 3.0 on Mac, and 199 1 was ported to Unix platform. The earliest version that appeared on the PC platform was version 4.0 of 1992, which was also the earliest Japanese porting version. Version 5.0/5.5 is the most widely used version on most MAC computers. Because this version uses DanClark's anti-aliasing display engine, the vector graphics that have always been serrated have made a qualitative leap in graphic display! At the same time, the interface has been greatly reformed, and the style is very similar to Photoshop. It is quite easy for the old users of Adobe to get started. No wonder it quickly became popular in the publishing industry and soon launched a Japanese version! The only pity is that there is no PC version, so most PC users can't see her when using Photoshop3.0! Taking this opportunity, Adobe immediately launched version 6.0 on Mac and Unix platforms. What Illustrator is really known to PC users is the release of version 7.0 of 1997. Perhaps Adobe has noticed the increasingly prosperous PC world. Launched on both Mac and Windows platforms. Because version 7.0 uses the perfect PostScript page description language, the quality of text and graphics in the page has made another leap. She won a good reputation by virtue of her good interchangeability with Photoshop. The only regret is that 7.0 has poor support for Chinese. 1998, Adobe released an epoch-making version-Illustrator 8.0, which made Illustrator a perfect drawing software. With the powerful strength of Adobe, the support for double-byte languages such as Chinese characters and Japanese is completely solved, and a powerful "grid transition" tool (CorelDraw9.0 also has corresponding functions, but the effect is poor) and a text editing tool are added, so that it completely occupies the professional vector.
Good momentum, 1999, published in Chinese. The latest version 10 has also been launched, which is believed to bring more surprises to users.
What's new in Illustrator 10?
After Macromedia launched Freehand 10, many fans of AdobeIllustrator hope that Adobe can launch a new version as soon as possible, so that Illustrator will not lag behind Freehand.
In recent years, many versions of Illustrator are only interface improvements, but not many actual functional improvements. However, I believe that the new Illustrator 10 will bring new surprises to demanding Illustrator users, because Illustrator 10 not only provides faster working speed, but also adds many new functions:
First-class drawing tools
Illustrator 10 provides many brand-new design tools for the convenience of art designers. On the tool board, you can easily find new tools, such as pattern copying, light and shadow painting, irregular graphic making, graphic edge modification, and webpage slicing tools. By using these tools, you can quickly draw some more complex graphics. Users can also use the grid function for more perfect alignment.
Increase the number of function panels
The function panel of Illustrator 10 retains the functions of Adobe Stacking Tool Panel. Users can freely put away or expand the panel according to their own needs, saving desktop workspace. Different panels can also be used together to increase flexibility. In the new Illustrator 10, most panels have been reorganized, and the number of functional panels has increased to more than 20.
More flexible operation
Illustrator engineers provide users with many function options, so that users can quickly use all the functions of Illustrator without memorizing shortcut keys. At the same time, users can also edit the convenient keys, different indication modes and different display settings of the keyboard at will.
Because many beginners in illustration don't know where to put the color label of the illustrator. Therefore, the new Illustrator puts all color codes in the same location, so that users can find the required color codes faster and greatly improve work efficiency.
Strengthening bitmap processing In the past, Illustrator only focused on vector drawings and 2D plans, which usually limited the special effects of bitmaps. But Illustrator 10 strengthens the bitmap processing function. It can not only deform any bitmap with deformation tools, but also use the whole picture as a symbol brush in Illustrator, and use the same picture instantly on the screen through Illustrator 10 to make more wonderful artistic design.
Adobe indicates that Illustrator 10 is the fastest in previous versions. The startup speed and other functions of the software have been optimized, which makes it perform better when importing dot matrix images, calculating complex graphics and redrawing the screen. Illustrator 10 is compatible with MAC OS X. I believe that most of the friends who use Illustrator are designers who use Apple computers, so Illustrator 10 will launch two versions of Windows and Macintosh to meet the needs of different users.
Export vector graphics commonly used on the Internet
SVG/SVGZ: It fully supports the output in SVG format (SVGZ is a compressed version of SVG), and can be viewed directly with a browser after export. (SVGViewer plug-ins can be downloaded directly from Adobe website for free. )
Flash format: Now Illustrator can directly export the swf format without installing the Illustrator plug-in developed by Macromedia.
In fact, one of the selling points of Illustrator 10 is that it can be executed directly on Mac OS X. It uses Aqua interface, and its overall execution speed is slower than that of MacOS9. However, I believe that when Apple introduces MacOS 10. 1, the implementation speed of Illustrator 10 on MacOSX will be improved.
Because of the use of Shi Ying display engine, Illustrator 10 can redraw the screen of MacOSX more quickly, and it also has a good display effect on the transparent tone of the object.
I believe that the launch of Illustrator 10 will bring surprises to Illustrator users. Because Illustrator 10 not only has a more detailed interface design, but also strengthens the actual functions. For some users who like to try new things, Illustrator 10 can be directly executed on two brand-new operating systems, MacOSX and WindowsXP, which brings a brand-new operating experience to professional artists.
What does the vector diagram in the design mean? vectogram
It consists of basic lines and color blocks, and each node can be edited at will, and the color can be changed at will, and the clarity will not be affected by enlargement or reduction. Vector software (Illoutrator, coreldraw) is often used to design illustrations, figures, signs, etc. Bitmaps are edited photos, especially photos of people or scenes with particularly complex effects. Bitmaps are richer in color, but they can't be enlarged at will, which will reduce the clarity.
Whether the CG illustrations you usually see are vector illustrations or bitmap illustrations is mostly the flexibility and convenience of a picture.
Vector illustrations can be easily animated and used to print any size.