output

I would like to output my data to a file for the user to download without actually creating the file physically on the server. The data of the file is simply array that I'm converting into a CSV format for the user to download. Here's my code: $fh = fopen('file.csv','w'); fputcsv($fh,$arr); // $arr is my array that contains the data to be parsed into CSV fclose($out); The above code creates the file successfully... but I don't want to have to create a file. I want to simply stream the output. Any help would be greatly appreciated! You can use header("Content-type: text/csv"); header("Cache

I have a numpy.ndarray sample of numbers, each between 1 and 2**20 . I'd like to write it into a binary file, such that each element is represented by four bytes. However, the resulting file size is different from 4 times the size of the sample. This is the code I'm using: outputFile = open('testDS', 'w') print len(sample) if (outputFile is not None): for s in sample: assert(s < 2**20) r = struct.pack("i", s) assert(len(r) == 4) outputFile.write(r) outputFile.close() The output I'm getting (the size of the sample) is: 1000 However, the resulting file size is 4026 bytes. Any ideas why the file

I have this form of a spreadsheet: A B C D abc abc abc 1 def ghi jkl 1 mno pqr stu 3 vwx yza bcd 4 mno pqr stu 5 mno pqr stu 5 vwx yza bcd 5 mno pqr stu 1 Where the first 3 columns are just data of type string. The column D has integers which has numbers repeating. My question is how to output a fifth column like so: A B C D E abc abc abc 1 1 def ghi jkl 1 3 mno pqr stu 3 4 vwx yza bcd 4 5 mno pqr stu 5 mno pqr stu 5 vwx yza bcd 5 mno pqr stu 1 It only outputs the unique numbers from column D. I imagined running an if/else statement in a for or while loop that checks each cell in "D" and

I'm trying to capture output of an external program using java but I can't. I have the code to show it, but not to put it into a variable. I will use, for example, sqlplus to execute my oracle code "into exec.sql" system/orcl@orcl : user/password/DB name public static String test_script () { String RESULT=""; String fileName = "@src\\exec.sql"; String sqlPath = "."; String arg1="system/orcl@orcl"; String sqlCmd = "sqlplus"; String arg2 = fileName; try { String line; ProcessBuilder pb = new ProcessBuilder(sqlCmd, arg1, arg2); Map<String, String> env = pb.environment(); env.put("VAR1", arg1);

I have written a simple class having an SOP statement for "Hello World". But the Eclipse console is not showing output. I then wrote the same program in a previously created project and it worked fine. I am opening the Console as given below: Window->Show View->Console. But it is not working. I am using j2ee project in the same workspace. Any idea? Please help. I am stuck because of this problem. Go to "Window > Reset Perspective", that will reset the window settings to default. Next, you might need to stop any running Java processes. I suggest you then click "Remove all Terminated Launches"

I'm aiming to write a script that will compare each line within a file, and based upon this comparison, create a new file containing the lines of text which aren't in the second file. For example; **File 1:** Bob:20 Dan:50 Brad:34 Emma:32 Anne:43 **File 2:** Dan:50 Emma:32 Anne:43 The new output (File 3): Bob:20 Brad:34 I have some idea of how this needs to be done, but not exactly: def compare(File1,File2): with open(File1, "a") as f1: lines = f1.readlines() string = line.split(':') with open(File2, "a") as f2: lines = f2.readlines() string2 = line.split(':') if string[0] == string[1]: with

I got confused with the openCV documentation mentioned here . As per the documentation, if i create an image with "uchar" , the pixels of that image can store unsigned integer values but if i create an image using the following code: Mat image; image = imread("someImage.jpg" , 0); // Read an image in "UCHAR" form or by doing image.create(10, 10, CV_8UC1); for(int i=0; i<image.rows; i++) { for(int j=o; j<image.cols; j++) { image.at<uchar>(i,j) = (uchar)255; } } and then if i try to print the values using cout<<" "<<image.at<uchar>(i,j); then i get some wierd results at terminal but if i use the