decimal

The following code currently outputs: 12.1 12.100 12.1000 12.00 12 12.0000 How can I change it so it outputs: 12.1 12.1 12.1 12 12 12 Math.Round seems to be the thing, but it makes me define how many decimal places I want, but I want them to be variable as above. If there is no mathematical way to do it, I'll just strip the zeros and decimal points off the right side of the strings, but would think there is a math way to handle this. using System; using System.Collections.Generic; namespace Test8834234 { public class Program { static void Main(string[] args) { List<string> decimalsAsStrings =

I am trying to convert a decimal value back to an RGB value. Assuming that this is the formula for compiling the decimal value c = r*(255*255)+g*255+b (For example rgb(16,120,78) adds up to 1071078) How would one solve r, g and b without any "overflow"? Thanks in advance! Use division, modulo ( % ) and floor rounding: var r = Math.floor(c / (256*256)); var g = Math.floor(c / 256) % 256; var b = c % 256; Edit: halex spotted the diffence in use of 255 and 256 in the code. You should (as Millie Smith pointed out) use 256 instead of 255 when you put the components together: var c = r * (256*256) +

I'm using read_csv to read CSV files into Pandas data frames. My CSV files contain large numbers of decimals/floats. The numbers are encoded using the European decimal notation: 1.234.456,78 This means that the '.' is used as the thousand separator and the ',' is the decimal mark. Pandas 0.8. provides a read_csv argument called 'thousands' to set the thousand separator. Is there an additional argument to provide the decimal mark as well? If no, what is the most efficient way to parse a European style decimal number? Currently I'm using string replace which I consider to be a significant

I'm heaving trouble finding the right regex for decimal numbers which include the comma separator. I did find a few other questions regarding this issue in general but none of the answers really worked when I tested them The best I got so far is: [0-9]{1,3}(,([0-9]{3}))*(.[0-9]+)? 2 main problems so far: 1) It records numbers with spaces between them "3001 1" instead of splitting them to 2 matches "3001" "1" - I don't really see where I allowed space in the regex. 2) I have a general problem with the beginning\ending of the regex. The regex should match: 3,001 1 32,012,111.2131 But not: 32,012

I have an app that prints a 3x3 cv::Mat on the iPhone screen. I need to reduce the decimals, as the screen is not so big, see: [1.004596557012473, -0.003116992336797859, 5.936915104939593; -0.007241746117066327, 0.9973985665720294, -0.2118670500989478; 1.477734234970711e-05, -1.03363734495053e-05, 1.000089074805124] so I would like to reduce the decimals .4 or .6 or six decimals. Any ideas? Cheers If you were using printf cv::Mat data(3, 3, CV_64FC1); for (int y = 0; y < data.rows; ++y) { for (int x = 0;x < data.cols; ++x) { printf("%.6f ", data.at<double>(y, x)); } } If you were using std:

By default mysqli returns all values as strings, the MYSQLI_OPT_INT_AND_FLOAT_NATIVE option allows you to convert ints and floats to their appropriate types. Though this does not affect decimal fields. Is there a way to automatically cast all decimal fields to a php float type without manually calling $value = (float) $row->some_decimal_field ? I highly doubt it. Decimals use fixed point math, and there is no data type in PHP that can provide this. Floats come close, but they are in fact rounded, meaning that assigning 2 to a float could result in 1.99999999999999999 instead. So even if MySQL

There's a way to force c# NumericUpDown to accept both comma and dot, to separate decimal values? I've customized a textbox to do it (practically replacing dots with commas), but I'm surprised that there isn't another way.. This question explains how to change the separator, but I would like to use both! NumericUpDown control uses the culture of the operating system to use comma or dots as a decimal separator. If you want to be able to handle both separators and consider them as a decimal separator (ie: not a thousand separator), you can use Validation or manual event treatment, for example: