Tagged Questions
-1
votes
2answers
23 views
Round an integer in increments of 5
I want to increment an integer value in increments of 5. Examples would be: 233 to 235, 437 to 435, and say a corner case such as 298 to 300. I feel like I should divide by 5.
Edit: Very sorry for ...
-1
votes
2answers
35 views
Objective-c: map a range
I have a variable with values ranging from 0 to 4000, but need to convert the value so it outputs 0 to 1 instead.
In arduino, there's a function called, map:
map(value, fromLow, fromHigh, toLow, ...
0
votes
0answers
62 views
calculate the distance between two point from iPhone Camera [closed]
i want to calculate the distance between two point from iPhone camera. i am explain you that what i want. Suppose i am standing with my iPhone (with camera on) 10 feet far from the object. So my two ...
-3
votes
0answers
28 views
How do i make a search for only specific letters in a proposition
I have this phrase: aawwaaazzeezzzee.
I need to make a search that returns:
if the letter a has been grouped(aa) 2 times show how many times.
if the letter a has been grouped(aaa) 3 times show how ...
3
votes
1answer
96 views
Calculus to convert Y coordinates for purpose of updating bpm in a metronome
I'm in the course of developing a metronome for iPad. I'm using CGAffineTransformRotate for the metronomeArm animation, NSTimer(I'm not interested in great precision) for sound and a ...
2
votes
0answers
53 views
Simplifying a fraction with decimals for ratio calculation [duplicate]
Assume I want to calculate a ratio equality...
So,
a c
--- == ---
b d
Where a = 1.2, b = 2.4, d = 5.3
I know how to solve the equation (cross multiply and divide) easily; however, I ...
-10
votes
3answers
119 views
Calculate the sum of numbers between 1 and 100 that end in 5 [closed]
I'm trying to calculate the sum of all the numbers between 1 and 100, but only those numbers that end in 5: 5, 15, 25, and so on.
I have no idea how to do this; I know how to calculate a sum, but not ...
0
votes
1answer
127 views
Check if any values have changed a certain amount
Does anyone know any efficient ways to check if any set of integers contains an integer that has changed by a certain amount.
For example I have:
int1 = 10;
int2 = 20;
int3 = 30;
And I want to ...
0
votes
3answers
54 views
How to pick a line closest to the center on a grid?
I am drawing a simple grid, and I want the line closest to the center of the screen to be highlighted a different color.
What is the formula to determine what line was drawn that closely resembles ...
0
votes
3answers
91 views
Calculate Latitude and longitude more between Latitude/Longitude points?
Latitude: 22.744812,
Longitude: 75.892578
The above would be considered my center point.
And now I need to determine the latitude and longitude points from center point 1000 meter outward to each ...
0
votes
1answer
50 views
Calculate Distance Forumla while using a Scale
I am trying to calculate a distance based upon the scale my users draws in.
My user can snap to other points in the game by drawing a line on a grid.
The grid is a numerical value that they can ...
0
votes
1answer
85 views
Distance between two points on circle in specific direction
I have two points on my circle, (x1y1) and (x2y2). How do I calculate distance between them in counter and clock wise direction.
Currently, I am using following formula to calculate the distance ...
0
votes
1answer
44 views
Incorrect Points in Circumference
I am trying to calculate points in a circumference and I do not get expected values.
I am calculating it like this:
- (NSMutableArray *) pointsForSegment:(int) segment
{
NSLog(@"segment is %d", ...
0
votes
1answer
98 views
Enumerating all possible permutations in objective c -xcode
I want to have my program loop over all possible combinations of something like 5c1,5c2,5c3 etc and calculate some things within the loop.
Something like
5c1 ->
1,0,0,0,0
0,1,0,0,0
0,0,1,0,0
...
0
votes
1answer
66 views
Why isn't my curved text centering itself?
I have a UIView subclass called dpCurvedLabel. It uses CATextLayers to curved text around an arc. It works fine, except that I can't get it perfectly centered in the layers parent view. I want the ...
