octave framework

In the comparison of a matrix of MXN and MX1, the original intention is to make each row of the matrix of MXN compare to each row of the mX1 matrix, and the result is right, but will report a warning:mx_el_eq:automatic Broadcasting operation applied. Obsessive Compulsive Disorder! Such as:There are many reasons for this error, but basically the error caused by mismatched matrix size mismatch in operation. The solution is to either adjust the matrix to match it, or use the Bsxfun function to rede

1. Representation of the Matrix:v = [1 2 2]% represents a matrix of 1 rows and 3 columnsv = [1; 2; 2]% represents a matrix of 3 rows and 1 columnsv = [1 2; 2 3; 4 5]%3*2 matrixSize (v)% to find rows and columns of VLength (v)% for the column of V2. Representation of several basic matrices:1) s = Ones (2, 4)%2*4 full 1 matrix2) m = Zeros (3, 4)%3*4 full 0 matrix3) E = Eye (3)%3 Order Unit matrix4) R = rand (3, 4)%3*4 element is an arbitrary matrix5) R = Randn (3, 4)% can contain negative numbers3

Data calculation:>> a=[1 2;3 4;5 6]a=1 2 3 4 5 6>> b=[ One A; - -; the -]b= One A - - the ->> c=[1 1;2 2]c=1 1 2 2>> a*c% Matrix *Cans=5 5 One One - ->> A.*b%each element of matrix A is multiplied by the corresponding element in B ans= One - the About the the>> a.^2%each element of a matrix is multiplied by a square ans=1 4 9 - - $>> v=[1;2;3]v=1 2 3>>1./V%the reciprocal ans of each element in the V-matrix=1.00000

Machine Learning-Overview of common matlab programming commands -- Summary from ng-ml-class octave/MATLAB tutorial CourseraA. basic operations and moving data around1 in command line mode, you can use Shift + press enter to append the next line to output 2 length command to apply to the matrix, and return a higher one-dimensional dimension3 help + command is the display command. mat File Save hello. mat B uses binary compression to save the data. Save

In the paper of anomaly detection algorithm based on Gaussian distribution, the principle and formula of anomaly detection algorithm are given in detail, and the octave simulation of the algorithm is presented in this paper. An instance is a server that marks an exception based on the throughput (throughput) and delay time (Latency) data of the training sample (a set of network servers).The data set is visualized as follows:We calculate the mathematic

'; if (distance = =-1) distance = d_tmp; index = j; else if (d_tmpAlgorithm for recalculating centroid and initializing centroid:function centroids = computecentroids (x, IDX, K) [m n] = size (X), centroids = Zeros (K, n); num = zeros (k,1); for (i = 1:m) c = idx (i,:); Centroids (c,:) + = X (i,:); Num (c,:) ++;endforcentroids = centroids./num;function centroids = kmeansinitcentroids (x, K) centroids = zeros (k, size (x, 2 )); randidx = randperm (Size (x, 1)), Ce

general P is a single number,p is a vector can be combined with multiple sub-graphs as a sub-graph. Clear Clc X=-4*pi+eps:0.01:4*pi; Y1=sin (x); Y2=cos (x); Y3=tan (x); Figure Subplot (2,2,1);p lot (x,y1), title (' Sin (x) ') Subplot (2,2,2);p lot (x,y2), title (' cos (x) ') Subplot (2,2,[3,4]);p lot (x,y3), title (' Tan (x) ')% merges two of the second row into one Figure Subplot (2,2,[1 2]);p lot (x,y1), title (' Sin (x) ')% merges two of the first row into one

Fourth Lesson plotting Data Drawing Datat = [0,0.01,0.98];y1 = sin (2*pi*4*t);y2 = cos (2*pi*4*t);Plot (t,y1);( drawing Figure 1)Hold on; ( Figure 1 does not disappear) Plot (T,y2, ' R ');( draw in red Figure 2)Xlable (' time ') ( horizontal axis name)Ylable (' value ') ( vertical axis name)Legend (' Sin ', ' cos ')(labeled two function curves)Title (' My Plot ')Print-dpng ' Myplot.png ' ( save image)CD '/home/flipped/desktop ' Print-dpng ' myplot.png ' ( save image to desktop)Close(image off)La

Fifth lesson control statements and equations for,while,if Statements and Functions(1) For loopV=zeros (10,1)%initial vectorsFor I=1:10,%assign for the vectorsV (i) = 2^i;EndV(%you can also do:Indices=1:10;For I=indices,V (i) =2^i;EndV)(2) WhileloopI = 1;While I V (i) = 100;I = i+1;EndV(3) Break StatememtsI=1;While true,V (i) = 999;I = i+1;if I = = 6,BreakEndEnd(4) If-else statementsV (1) = 2;If V (1) = = 1,Disp (' The value is one. ');ElseIf V (1) = = 2,Disp (' The value is. ');ElseDisp (' The

GNU Octave Editor Mode crash workaround GNU Octave is an open source version of Matlab that is compatible with most MATLAB grammarsAfter the installation is found in the editor mode in the input letter after a short time will crash, after some groping to find that the problem of automatic completion, close the good. But as a lazy man, there's no auto-completion that's not killing me.After a search is a bug

. DrawingT=[0:0.01:0.98]Y1=sin (2*pi*t)Plot (t,y1) % drawingOnY2=cos (2*pi*t)Plot (T,y2, ' R ')Xlabel (' time ')Ylabel (' value ')Legend (' Sin ', ' cos ') % legendTitle (' My Plot ')Print-dpng ' myplot.png ' % saved as picture fileClose % Closes the current diagramFigure (1) % Create a diagramCLF % Empty chart Current ContentsSubplot (1,2,2) % graph cut to 1*2 grid, draw 2nd gridAxis ([0.5 1-1 1]) % axis changed to x belongs to [0.5,1],y belonging to [ -1,1]Imagesc (The Magic ()), Colorbar,colo

Octave Machine Learning Common commands A, Basic operations and moving data around 1. Attach the next line of output with SHIFT + RETURN in command line mode 2. The length command returns a higher one-dimensional dimension when apply to the matrix 3. Help + command is a brief aid for displaying commands 4. doc + command is a detailed help document for displaying commands 5. Who command displays all currently created variables 6. Whos command displays

Document directory 1. Fan out of the framework 2. Integration of auxiliary modules of hybrid frameworks 3. Separation of projects and configurations of hybrid frameworks 4. Introduction to calling hybrid frameworks 5. Support for mixed framework code generation tools 6. Summary of mixed framework Optimization I introduced the variants and hybrid framewo

I have just written imshow and want to find that imwrite and imshow are exactly the same. Therefore, I simply wrote imwrite usage based on the previous article. Article link: http://blog.csdn.net/watkinsong/article/details/38535341 Images

Vector Semicolon: Split Line Spaces or commas: Split columns Create and access row vectors Space or comma split >> v = [1 2 3]% equivalent: v = [1, 2, 3] v = 1 2 3 >> V (2)% only one row, so specify is the column ans = 2Column

1) Modify prompt string: PS1('>>')　　>>ps1 ('input:') Input:122) operation>> 1+2Ans=3>>1*2ans=2>>1 == 2ans=0>>1 != 2ans=1>>1 && 0ans=0>>1 || 0ans=13) output: disp; Formatted output with disp (sprintf (...)); Format is used to specify the length of

As mentioned earlier in the article, the K-means algorithm, the first step is to find the sample points of the cluster. The following are implemented in two ways, one is the normal cycle, and the other is the full vectorization calculation.Assume:X

Document directory 3. Implementation of a hybrid framework 4. Composition of project files In my previous article "evolution of the Winform Development Framework framework", I introduced the traditional Winform development framework, the traditional WCF development framework