This question already has answers here:
Padding zeros to the left in postgreSQL
(4 answers)
Closed 4 months ago.
For example i have ints 12 and 7
I want to convert this numers to 5-char string with leading zeros, so 12 -> 00012, 7->00007.
It is possible to do it in postgres?
Ok, I find the answer
SELECT TO_CHAR(7,'fm00000');
SELECT TO_CHAR(12,'fm00000');
Related
This question already has answers here:
Replace all zeros in vector by previous non-zero value
(6 answers)
Closed 3 years ago.
I'm trying to replace a zero value with the previous value while storing it in a variable. I imported the csv file as a Numeric Matrix.
I think your code should be something like below:
Stocks = Stock_Market;
for i = 2:length(Stocks(:,1))
if Stocks(i,1)==0
Stocks(i,1) = Stocks(i-1,1);
end
end
This question already has answers here:
Precision String Format Specifier In Swift
(31 answers)
Closed 4 years ago.
I want to print 5 digit after point in Swift 4. In C language i can do it as .5f but now i can't. Have any shortest code to do this?
String(format: "%.5f", 1.831831)
This question already has answers here:
How to store more than 4 decimal places in an array in MATLAB
(2 answers)
Closed 5 years ago.
i have code below in matlab:
converted = ncread(this_file, 'U');
disp(converted(50,10,20));
and the result is:
-0.1561
actually the number is -0.15617890 but this code changes the the number of floating numbers. why?
MATLAB displays only 4 digits after the decimal point by default. You can use format to display more digits:
format long
converted = ncread(this_file, 'U');
disp(converted(50,10,20));
This question already has answers here:
Why does floating-point arithmetic not give exact results when adding decimal fractions?
(31 answers)
swift: issue in converting string to double
(2 answers)
Closed 6 years ago.
I would like to round a double with 2 decimals.
I have tried many ways
- round * 100 /100
- by passing with a string
but it's the same matter
I would like 166.67 but I get 166.66999999
(look at the picture)
This question already has answers here:
Random order of rows Matlab
(4 answers)
Closed 7 years ago.
I'm looking for an efficient way to manipulate a 40x151 matrix so that the rows are randomly scrambled.
I worked out the answer just as I was about to post.
new_matrix = old_matrix(randperm(40),:)