How to find out all array element indices equal to several values (>2)
For example, I have an array a=[1 2 3 4 5 5 4 3 2 2 2 1], I want to know the indices of all elements equal to b=[2 5]
Remember, I cannot use style like a==b(1) | a==b(2) because number of elements in b is arbitrary.
Do I have to use a for loop to do this?
You can use ismember (as Daniel said just seconds before I hit enter...) ;-)
a=[1 2 3 4 5 5 4 3 2 2 2 1];
b=[2 5];
c=find(ismember(a,b))
Output:
c =
2 5 6 9 10 11
You should be able to use properties s = 100; d = zeros(1,100); end right? If you already have the 100 as a default for s, you should also be able to provide this as part of the default for d. I'm guessing that you're trying to avoid doing that...
You can't do it with arrays or dictionaries; both are mappings from keys to values. Instead, you need to use foreach with a key-value pair system directly: set pairs { set1 table set2 chair set1 chair } foreach {key value} $pairs { puts "$key is $value" } This does actually...
The valid range of indices of an array with N elements is [0, N-1]. Thus instead of for example this loop for (int i=1; i <= n; i++) ^^^^ ^^^^^^ you have to write for ( int i = 0; i < n; i++ ) As you used operator new...
Pretty fundamentally - CSV is an array based data structure - it's a vaguely enhanced version of join. But the thing you need for this job is print_hr from Text::CSV. First you need to set your header order: $csv->column_names (@names); # Set column names for getline_hr () Then you can...
As PM 77-1 suggests, consider using the built–in Array.prototype.sort with Date objects. Presumably you want to sort them on one of start or end: jobs.sort(function(a, b) { return new Date(a.ys, a.ms-1) - new Date(b.ys, b.ms-1); }) ...
Curly brackets are your friend when inserting variables into double quoted strings: $main_query=oci_parse($connection,"INSERT INTO ROTTAN(NAME,ROLLNO) VALUES('{$array[$rs][0]}','{$array[$rs][1]}')"); ...
matlab,matrix,multidimensional-array,scalar
Errr, why you multiply indexes instead of values? I tried this: comDatabe(:,:,[1 2 3],:,8) = comDatabe(:,:,[1 2 3],:,8)*-1 And it worked....
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http://www.mathworks.com/help/matlab/matlab_prog/continue-long-statements-on-multiple-lines.html Continue Long Statements on Multiple Lines This example shows how to continue a statement to the next line using ellipsis (...). s = 1 - 1/2 + 1/3 - 1/4 + 1/5 ... - 1/6 + 1/7 - 1/8 + 1/9; ...
To get your desired output, this will do the trick: var file = "a|b|c|d, a|b|c|d, a|b|c|d, a|b|c|d, a|b|c|d"; var array = file.split(", ") // Break up the original string on `", "` .map(function(element, index){ var temp = element.split('|'); return [temp[0], temp[1], index + 1]; }); console.log(array); alert(JSON.stringify(array)); The split converts...
The "weird behavior and lag" you see is almost always a result of callbacks interrupting each other's execution, and repeated unnecessary executions of the same callbacks piling up. To avoid this, you can typically set the Interruptible property of the control/component to 'off' instead of the default 'on', and set...
You can use a simple array based test like var validCodes = ['IT00', 'O144', '6A1L', '4243', 'O3D5', '44SG', 'CE64', '54FS', '4422']; function validItems(items) { for (var i = 0; i < items.length; i++) { if (validCodes.indexOf(items[i]) == -1) { return items[i]; } } return ''; } var items = ["IT00",...
Simply do: array1.zip(array2).zipWithIndex.map { case ((a, b), i) => (a, b, i) } ...
$x and $y are only defined within the scope of the function. The code outside of the function does not know what $x or $y are and therefore will not print them. Simply declare them outside of the function as well, like so: <?php function sum($x, $y) { $z =...
Unless you have some implementation bug (test your code with synthetic, well separated data), the problem might lay in the class imbalance. This can be solved by adjusting the missclassification cost (See this discussion in CV). I'd use the cost parameter of fitcsvm to increase the missclassification cost of the...
According to the docs https://github.com/rails/strong_parameters#permitted-scalar-values: The permitted scalar types are String, Symbol, NilClass, Numeric, TrueClass, FalseClass, Date, Time, DateTime, StringIO, IO, ActionDispatch::Http::UploadedFile and Rack::Test::UploadedFile. To declare that the value in params must be an array of permitted scalar values map the key to an empty array: params.permit(:id => []) If...
My bet is that trf is a very large matrix. In these cases, the surface has so many edges (coloured black by default) that they completely clutter the image, and you don't see the surface patches One solution for that is to remove the edges: surf(trf, 'edgecolor', 'none'). Example: with...
You cannot directly add an ActionListener to a JLabel - it doesn't have that functionality. Instead, you should create a MouseAdapter, override the mouseClicked method, and use JLabel.addMouseListener to add it to your JLabels. The best way to get it to, as you say, "display a panel and the other...
inputdlg returns a cell array of strings. You can convert to double with str2double: units = str2double(inputdlg(question, title)); ...
You need to use brackets notation to access property by variable: function myFunc( array, fieldToCompare, valueToCompare ) { if( array[fieldToCompare] == "Thiago" ) alert(true); } And wrap name in quotes: myFunc( myArray, 'name', "Thiago" ); ...
javascript,arrays,angularjs,foreach
You cannot store key-value pair in array. Use object to store key-value pair. See comments inline in the code. var obj = {}; // Initialize the object angular.forEach(data, function(value, key) { if (value.start_date > firstdayOfWeek && value.start_date < lastdayOfWeek) { if (obj[value.firstname]) { // If already exists obj[value.firstname] += value.distance;...
Your question is unclear, but I'll take a shot. To go from: val x = Array("a","x,y","b") to "a:x,y:b" You can use mkString: x.mkString(":") ...
This is called "skeletonization" and you can do it with the function bwmorph: bwmorph(Img, 'skel', Inf); Best...
From the Matlab forums, the dir command output sorting is not specified, but it seems to be purely alphabetical order (with purely I mean that it does not take into account sorter filenames first). Therefore, you would have to manually sort the names. The following code is taken from this...
I assume with "2d-line" you mean a 2d-plot. This is done by the plot-function, so there is no need of surf or mesh. Sorry, when I got you wrong. The following code does what I think you asked for: % Generate some propagating wave n = 20; t = linspace(0,10,100);...
M =[0 0 0 0 0 1 0 0 0 0 0 2 0 0 0 0 0 2 0 0 0 0 0 1 0 1 0 0 0 1 0 4 0 0 0 0 0 3 0 0 6 0 0 4 0 0 3 0 0...
Morphological operations are suitable but i would suggest line structuring element as your arrangement is horizontal and you do not want overlaps between lines: clear clc close all BW = im2bw(imread('Silhouette.png')); BW = imclearborder(BW); se = strel('line',10,0); dilateddBW = imdilate(BW,se); img= imerode(BW,se); figure; imshow(img) ...
I executed ur code. Just add numberView.setTextColor(Color.BLACK); and it will work! :)...
php,arrays,codeigniter,foreach
You can use active record as below. $arrResult = $this->db ->where('id','foo') ->where_in('result',array(1,2)) // alternative to above condition //->where('(result = 1 OR result = 2)') ->get('mytable') ->result_array(); foreach($arrResult as $result){ // run code based on $result; } ...
Here is a way using an intermediate hash-of-hash The h ends up looking like this {"Alaska"=>{"Rain"=>"3", "Snow"=>"4"}, "Alabama"=>{"Snow"=>"2", "Hail"=>"1"}} myArray = [["Alaska","Rain","3"],["Alaska","Snow","4"],["Alabama","Snow","2"],["Alabama","Hail","1"]] myFields = ["Snow","Rain","Hail"] h = Hash.new{|h, k| h[k] = {}} myArray.each{|i, j, k| h[i][j] = k } p [["State"] + myFields] + h.map{|k, v| [k] + v.values_at(*myFields)} output...
I think you are missing the x limit. xlim([0 2.5*a]) ...
You can extract the numerator and denominator with numden, then get their coefficiens with coeffs, normalize the polynomials, and divide again. [n,d] = numden(T); cn = coeffs(n); cd = coeffs(d); T = (n/cn(end))/(d/cd(end)); The output of latex(T) (note: no simplifyFraction now; it would undo things): Of course this isn't equal...
In my personal opinion, NEVER try to get data from an array within quotes! Always do it outside of quotes; especially in multi-denominational arrays. '$input[$rand_keys[$i]]' should be rewritten as '".$input[$rand_keys[$i]]."' OR '{$input[$rand_keys[$i]]}'. In my opinion it is better to do it outside of quotes instead of using { }. ...
javascript,jquery,html,arrays,contains
You can use :contains selector. I think you meant either one of those values, in that case var arr = ['bat', 'ball']; var selectors = arr.map(function(val) { return ':contains(' + val + ')' }); var $lis = $('ul li').filter(selectors.join()); $lis.css('color', 'red') <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <ul> <li>cricket bat</li> <li>tennis ball</li> <li>golf ball</li>...
ruby-on-rails,arrays,ruby,multidimensional-array
dup does not create a deep copy, it copies only the outermost object. From that docs: Produces a shallow copy of obj—the instance variables of obj are copied, but not the objects they reference. dup copies the tainted state of obj. If you are not sure how deep your object...
If you want a sequence of int, then use a vector<int>. Using the key_char string, the values of the chars in it will serve as the initial value of the ints. std::vector<int> key_num(key_char.begin(), key_char.end()); Then, iterate over each character of key_num and convert it to the equivalent int value for...
javascript,arrays,jquery-selectors
Here's a quick split and reduce: var arr = str.split("By ").reduce(function(acc, curr) { curr && acc.push(curr.split(" ")[0]); return acc; }, []); Result: ["Greili", "ToneBob", "hela222", "NovaSplitz"] Demo: JSFiddle...
Yes, this bookkeeping with i is usually a sign there should be something better. I came up with: ar =[ { name: "foo1", location: "new york" }, { name: "foo2", location: "new york" }, { name: "foo3", location: "new york" }, { name: "bar1", location: "new york" }, { name:...
You should use the random header. #include <random> std::default_random_engine generator; std::uniform_int_distribution dist(0, 5); int StringIndex = dist(generator); std::string ChosenString = characters[StringIndex]; The above will generate a random index into your array. If you want to limit the range, change the constructor of dist, for example (dist(0,2) would only allow for...
The strings defined in the legend command are assigned in order of the plots being generated. This means that your first string 'signal1' is assigned to the plot for signal1 and the second string 'signal2' is assigned to the vertical line. You have two possibilities to fix this problem. Execute...
Change you show function to this function show() { var content="<b>Your Plans For the Day:</b><br>"; for(var i = 0; i < Name.length; i++) { content += "Name " + Name[i]+"<br>"; } for(var i = 0; i < Date.length; i++) { content += "Date" + Date[i]+"<br>"; } for(var i = 0;...
You can use .map, like so var data = [ 'h', 'e', 'l', 'l', 'o', ' ' ]; var indices = [ 4, 0, 5, 0, 1, 2, 2 ]; var res = indices.map(function (el) { return data[el]; }); console.log(res); The map() method creates a new array with the results...
php,mysql,arrays,variables,multidimensional-array
The explode function is being used correctly, so your problem is further up. Either $data[$i] = mysql_result($result,$i,"data"); isn't returning the expected string "2015-06-04" from the database OR your function $data[$i] = data_eng_to_it_($data[$i]); isn't returning the expected string "04 June 2015" So test further up by echo / var_dump after both...
Arrays in C++ don't allow this syntax. What you should do is something like this: char[2] id; if( sx1272.packet_received.length > 5 ) { id[0] = sx1272.packet_received.data[4]; id[1] = sx1272.packet_received.data[5]; } ...
John, Try this: var dataSet = []; for (i = 0; i < mfrPartNumber.length; i++ ) { data = [dateReceived[i],name[i],color[i]]; dataSet.push(data); } This will build an array out of each instance of [i], and keep growing as your user keeps pushing the button....
There are a few basic ways of checking for a value in an integer array. The first is to manually search by looping through each value in the array, which may be what you want if you need to do complicated comparisons. Second is the .Contains() method. It is simpler...
javascript,arrays,loops,foreach,innerhtml
Just take a variable for the occurrence of even or odd numbers. var myArray = function (nums) { var average = 0; var totalSum = 0; var hasEven = false; // flag if at least one value is even => true, otherwise false nums.forEach(function (value) { totalSum = totalSum +...
You can change the XTickLabels property using your own format: set(gca,'XTickLabels',sprintfc('1e%i',0:numel(xt)-1)) where sprintfc is an undocumented function creating cell arrays filled with custom strings and xt is the XTick you have fetched from the current axis in order to know how many of them there are. Example with dummy data:...
c,arrays,segmentation-fault,initialization,int
In your code, int i is an automatic local variable. If not initialized explicitly, the value held by that variable in indeterministic. So, without explicit initialization, using (reading the value of ) i in any form, like array[i] invokes undefined behaviour, the side-effect being a segmentation fault. Isn't it automatically...
If you're "trying to allocate an array 64 bytes in size", you may consider uint8_t Buffer[64]; instead of uint8_t *Buffer[64]; (the latter is an array of 64 pointers to byte) After doing this, you will have no need in malloc as your structure with a 64 bytes array inside is...