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Buy Samsung ATIV Book 9 Plus 13.3 Inch Touchscreen Laptop (Intel Core i7, 8 GB, 256 GB SSD, Black): Memory - Amazon.com FREE DELIVERY possible on eligible purchases. MAGIX Movie Edit Pro Plus features professional-level video editing tools in a consumer-grade application. Read our video editor software review to find out more. So your eyes feel less tired and information can be viewed from any angle within 1. Degree. The device features a built- in sensor that automatically adjusts the screen and keyboard brightness depending on the light conditions. For better visibility and ease of use, the keyboard backlight brightens in dark environments and turns off when the surroundings become bright. Stay connected with Samsung's Side. Sync. Now your Samsung Galaxy phone or tablet can become an extension of your PC when the devices are connected through a USB cable or Wi- Fi. With Phone Screen Sharing Mode, you can view your Samsung Galaxy phone or tablet directly on your PC's screen or connected monitor. Through this screen virtualization mode you can directly control your mobile device from your PC. Intel, the Intel Logo, Intel Inside, Intel Core, and Core Inside are trademarks of Intel Corporation in the U. S. and/or other countries. FAQ | MATLAB Wiki | FANDOM powered by Wikia. Basics. Back to top. What is a cell array? Edit. A cell is a flexible type of variable that can hold any type of variable. A cell array is simply an array of those cells. It's somewhat confusing so let's make an analogy. A cell is like a bucket. You can throw anything you want into the bucket: a string, an integer, a double, an array, a structure, even another cell array. Now let's say you have an array of buckets - an array of cells or a "Cell Array". Each bucket can contain something different, or they might all contain the same type of variable. Bucket 1 could contain a string, while bucket 2 could contain an image (array of uint. Or all buckets could contain strings of various lengths. It's totally flexible. String. ca{2} = my. Integer. ca{3} = my. Double. Array. ca{4} = rgb. Image. ca{5} = my. Structure. The braces should be read as "contents of", so if you say ca{4} = rgb. Image, you are saying that "the content of" cell #4 is the variable rgb. Image. Another way to use the cell is to refer to the cell itself, rather than the contents of it, and for that you use parentheses. The item it refers to must be a cell. For example ca(1) is a cell, ca(2) is a cell, and ca(3) is a cell, even though those cells contain variables of arbitrary, and possibly different, types. To make something a cell, you enclose it in braces, like this. String}. ca(2) = {my. Integer}. ca(3) = {my. Double. Array}. ca(4) = {rgb. Image}. ca(5) = {my. Structure}. This set of code is entirely equivalent to the first set of code. For the first line, it's basically like saying "Let's get a bucket (a cell) and put the string into it - that's what {my. String} by itself is. Then let's take that bucket and make it bucket #1, replacing any bucket that was already there." In other words, take the cell {my. String} and make it be element #1 (bucket #1) of the cell array called "ca." It uses parentheses which means it refers to the whole single bucket (the bucket plus the contents) while the first set of code used braces which refers to only the contents of the bucket. So ca(1) equals the cell "{my. String}", while ca{1} equals the string "my. String" because the braces said to get the contents of the cell. In other words, ca{1} says don't give me the bucket with the string inside, just give me the string alone, without the bucket. It's just a slight difference - a slightly different way of considering it. Saying. String}; % or saying. String. are equivalent for the most part. You can use either way and I don't really think one way or the other is really preferred. You can use whatever way is easier for you to think about it. Maybe one way will be more intuitive for you than the other way, but again, they are equivalent. Cell arrays are similar to structures, which you probably are more familiar with, in that both are containers that can hold variables of a variety of different types (arrays, strings, scalars, even other structures or cells). The difference is that with structures you refer to the different "members" or "fields" by their name (e. User. Settings. my. String), while with cells you refer to them by their index number (e. Here is some demo code that may help explain cell arrays, and the type of classes you get when you use braces or parentheses. Initialize a cell array with three different types of contents. First cell contains an int. Let's see what's in cell #1 and the difference between. The class of ca. 1cell is %s\n', class(ca. The class of ca. 1contents is %s\n\n', class(ca. Let's see what's in cell #2 and the difference between. The class of ca. 2cell is %s\n', class(ca. The class of ca. 2contents is %s\n\n', class(ca. Let's see what's in cell #3 and the difference between. The class of ca. 3cell is %s\n', class(ca. The class of ca. 3contents is %s\n\n', class(ca. Now let's see what gets displayed when we use the. Here is what celldisp returns: \n'). One use of cell arrays is to hold lists of strings of different lengths. Since arrays are rectangular, you can't have an character array of strings unless each string was the same length (or padded with blanks to be as long as the longest string). To get around that, you can use a cell array instead of a character array. Each cell in the cell array would hold a string of a different length - they don't have to all be the same length like with a character array. For example. Short'; 'A little longer'; 'A really really long string'}. If you get strange error messages while working with cells or cell arrays, one easy thing to try is to change your braces into parentheses, or your parentheses into braces, and see if that eliminates the errors. It's also possible to mix indexing of the row and column of the cell array with the indexing of the contents of the single cell at that row and column of the cell array. For example, let's create a cell array of 2 rows and 3 columns, and in every cell of that let's put a 4 element integer array. Then we'll access the second element of the integer array at the cell in row 1, column 2 of the cell array. Create an empty cell array of 2 rows and 3 columns. Each element in the array is a single cell. Now, for each cell in the cell array. Number. Array = randi(9. Number. Array. % An alternate way of specifying is given on the next line. Number. Array}; % Note changes in braces and parentheses. The integer array in row #%d, column #%d of the cell array = [%d, %d, %d, %d]\n'.. Number. Array(1), random. Number. Array(2), random. Number. Array(3), random. Number. Array(4)). Print out the second element of the 4- element integer array. D array of cells. Value = c{1,2}(2). The second element of the integer array in cell row %d, column %d is %d\n'.. Value). To visualize, imagine you had an array of buckets arranged in 2 rows and 3 columns (this is our cell array), and in each bucket are 4 billiard balls arranged in a line. The above example goes to the bucket in the first row and second column, and reads off the number of the second billiard ball in that bucket. For further discussion see Loren Shure's blog: [1]For more information, this link gives good examples about accessing cell data: http: //www. Does MATLAB only calculate to 4 significant digits? Edit. It doesn't. Don't worry - your number is not truncated. It uses full double- precision floating point numbers to calculate everything. However, by default it only prints a few decimal places to the screen in the command window. You can change this, to print out more decimal places, using the command. Why does the transpose operator take the complex conjugate? Edit. When performing linear algebra operations on complex matrices, it is almost always the complex conjugate transpose (also called the Hermitian transpose) that is needed (see Gilbert Strang's linear algebra book for discussion- page 2. The bare apostrophe is an operator that takes the complex conjugate transpose. The non- conjugating transpose operator is a period followed by an apostrophe. Type help punct for more info. A' % complex conjugate transpose. A.' % transpose. How can I detect Na. N values in a matrix or vector? Edit. By definition, Na. N is not equal to any number, not even Na. N itself. Therefore there are two ways to detect Na. N values. % Generate sample data. Na. N. % Find Na. N values in two different ways. For speed purposes the use of isnan() tends to be 2. Here's a test snippet if you want to see the comparison. A = rand(1. 00. 0); %Random 1. A(rand(size(A))>. Populate with Na. Ns. t. 1 = 0; %time of isnan. A). t. 1 = t. 1+toc. A~=A. t. 2 = t. 2 + toc. Insure same results. How can I make MATLAB use the full window width for displaying matrices? Edit. In R1. 2 (MATLAB 6. Select the File | Preferences.. Command Window in the Preferences dialog that appears. In the Display section, there's a checkbox labeled Limit matrix display width to eighty columns. Unchecking that box allows matrix displays to make full use of the Command Window's width. Unchecked is the default.]. Starting with MATLAB R1.
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