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[matlab] ZOOM-FFT DL : 0: it is a matlab program, which can do zoom fft
Date : 2026-01-16 Size : 1kb User : lc
[matlab] tlabel DL : 0: This program places dates on time axis as DATETICK and works with ZOOM and PAN as DATETICKZOOM by Christophe Lauwerys. But, it also shows the full date after zooming or panning by using the ticks and time-axis label. So, if you zoom in down to second, you won t loose "when" you are. The input arguments are equal to those of DATETICK function, but if more than one axis handle is specified, they all will be LINKED! Also, some other options are available, for example, the use of LOCAL LANGUAGE for the months (default), or the use of an specific date format: DD HH:MM SS.FFF for example. Besides, sometimes with DATETICK you don t get optimal results. This program (try to) fix this problem. Just use it after some plot function with days (see DATENUM) in one of his axis (time-axis): t = linspace(0,1) + now x = rand(size(t)) plot(t,x) axis tight tlabel <---- Enjoy it! Bugs reports and suggestions will be very appreciated! -This program places dates on time axis as DATETICK and works with ZOOM and PAN as DATETICKZOOM by Christophe Lauwerys. But, it also shows the full date after zooming or panning by using the ticks and time-axis label. So, if you zoom in down to second, you won t loose "when" you are. The input arguments are equal to those of DATETICK function, but if more than one axis handle is specified, they all will be LINKED! Also, some other options are available, for example, the use of LOCAL LANGUAGE for the months (default), or the use of an specific date format: DD HH:MM SS.FFF for example. Besides, sometimes with DATETICK you don t get optimal results. This program (try to) fix this problem. Just use it after some plot function with days (see DATENUM) in one of his axis (time-axis): t = linspace(0,1)+ now x = rand(size(t)) plot(t,x) axis tight tlabel <---- Enjoy it! Bugs reports and suggestions will be very appreciated!
Date : 2026-01-16 Size : 12kb User : wusheng
[matlab] ginput2 DL : 0: Do you still use GINPUT to graphically select points on current axes with the mouse? Try this one! With GINPUT2 you can also: 1. ZOOM: in, out (double-click)! 2. PAN: when dragging! 3. DELETE: last selected point! 4. PLOT: while selecting! (optional, just input the line style!) 5. SCALE or GEOREFERENCE images! (optional, just input: true) So, besides of selecting points in a more precise way (zooming) you can DIGITIZE(!!!) lines with the last two options, by simply using: >> ginput2(true, .k ) Enjoy it! -Do you still use GINPUT to graphically select points on current axes with the mouse? Try this one! With GINPUT2 you can also: 1. ZOOM: in, out (double-click)! 2. PAN: when dragging! 3. DELETE: last selected point! 4. PLOT: while selecting! (optional, just input the line style!) 5. SCALE or GEOREFERENCE images! (optional, just input: true) So, besides of selecting points in a more precise way (zooming) you can DIGITIZE(!!!) lines with the last two options, by simply using: >> ginput2(true, .k ) Enjoy it!
Date : 2026-01-16 Size : 7kb User : Mike Gao
[matlab] mandelbrot DL : 0: This guide can draw a mandelbrot figure. In default values it calculates Z=Z^2+C for 20 iterations, where Z initally equal to zero and C has the values of every pixel created by meshgrid function(built-in). although mandelbrot equation is Z=Z^2+C you can change the degree of the equation between 1 - 50. higher number in iteration, points in axes gives better results in image besides more resulting time. to zoom an area of the figure you must aproximately choose the point and then change the center values to this point values then push Show Graph button. because of this is the first version there can be any lack of usage. -This guide can draw a mandelbrot figure. In default values it calculates Z=Z^2+C for 20 iterations, where Z initally equal to zero and C has the values of every pixel created by meshgrid function(built-in). although mandelbrot equation is Z=Z^2+C you can change the degree of the equation between 1- 50. higher number in iteration, points in axes gives better results in image besides more resulting time. to zoom an area of the figure you must aproximately choose the point and then change the center values to this point values then push Show Graph button. because of this is the first version there can be any lack of usage.
Date : 2026-01-16 Size : 8kb User : Mike Gao
[matlab] ZOOM_FFT_main- DL : 1: 利用MATLAB编写的关于频谱细化(Zfft)的程序,有注释。-Spectrum zoom (Zfft) program using MATLAB There are notes in it.
Date : 2026-01-16 Size : 1kb User : 延崭
[matlab] matlab2 DL : 0: 对“2.1.bmp”图像操作，将其放大至原来大小的1.5倍，采用双线性插值方法放大。对“2.1.bmp”绕图像中心逆时针旋转20度，采用双线性插值方法。此题目不要使用imresize和imrotate函数，自己写程序完成。 2.对畸变图像进行矫正:”2.2.bmp”为畸变后的图像，已知畸变后图像上的四个点（118，88）（90，140）（139，168）（168，116）对应畸变前的点分别为为（98，98）（98，158）（158，158）（158，68），用对应点约束法求畸变前的图像。（题目中的坐标为行-列坐标；涉及到的插值用双线性插值法） 3.利用离散余弦变换函数（dct2和idct2）对“lena.bmp”做压缩，观察压缩效果。 -Image manipulation, "2.1.bmp" zoom to 1.5 times the original size, using bilinear interpolation method to enlarge. "2.1.bmp" around the center of the image counterclockwise rotation of 20 degrees, a bilinear interpolation method. This topic Do not use imresize, and imrotate function, write your own program to complete. 2 of the distortion of the image to be corrected: "2.2.bmp" image after distortion, it is known that the four points on the image of the distortion (118,88) (90,140) (139,168) (168,116) corresponding to distortion prior to the point were to (98,98) (98,158) (158,158) (158,68), with a corresponding point constraint method seeking the image in front of the distortion. (Coordinates in the subject line- column coordinate involves interpolation with bilinear interpolation) 3 using discrete cosine transform the function (dct2, and idct2) "lena.bmp" do the compression, to observe the compression effect.
Date : 2026-01-16 Size : 2kb User : 单车少年
[matlab] New-Microsoft-Word-Document DL : 0: It will zoom the i/p image
Date : 2026-01-16 Size : 10kb User : Bhavya Shah
[matlab] ZOOMING DL : 0: this program is to zoom the given image. you provide the image. it will zoom it
Date : 2026-01-16 Size : 2kb User : isha
[matlab] 98548352ZOOM-FFT DL : 0: 很不错的ZOOM FFT的程序，学习颇多，不要错过(It is good for the student to study about ZOOM-FFT.)
Date : 2026-01-16 Size : 1kb User : `ck111