How do you know how to sort multidimensional arrays? - General

learning 2014.09.26 18:05 #71

Is there a code snippet for rsi (not the built in rsi)?

Mladen Rakic 2014.09.27 08:25 #72

apprentice coder:
Is there a code snippet for rsi (not the built in rsi)?

Here is an indicator that uses custom function (not the built in RSI) _rsi_function.mq4

It is as simple as it gets, and it can calculate RSI of period 1 (which built in RSI can not do)

Files:

_rsi_function.mq4 3 kb

learning 2014.09.27 16:49 #73

mladen:
Here is an indicator that uses custom function (not the built in RSI) _rsi_function.mq4 It is as simple as it gets, and it can calculate RSI of period 1 (which built in RSI can not do)

Thank you

learning 2014.09.30 08:47 #74

Is there a code that prevents opening a new order of a same kind on a same bar (if stop loss or take profit was hit, for example)?

Mladen Rakic 2014.09.30 11:44 #75

apprentice coder:
Is there a code that prevents opening a new order of a same kind on a same bar (if stop loss or take profit was hit, for example)?

Check the check_can_open function from this EA : https://www.mql5.com/en/forum/174385/page239

learning 2014.09.30 19:11 #76

mladen:
Check the check_can_open function from this EA : https://www.mql5.com/en/forum/174385/page239

Got it

Thanks

Mladen Rakic 2014.10.04 08:00 #77

Metatrader does not know how to sort multidimensional arrays

Here is a simple shell sort procedure that is sorting 2 dimensional array in this case. It is easy to extend it to any dimension of the array :

//------------------------------------------------------------------

//

//------------------------------------------------------------------

//

// shell sort

//

void SortIt(double& sortArr[][2])

{

int size = ArrayRange(sortArr,0);

int increment = size / 2;

//

while (increment > 0)

{

for (int i = increment; i < size; i++)

{

int j = i;

double temp = sortArr[0];

double temi = sortArr[1];

while ((j >= increment) && (sortArr[j-increment][0] < temp))

{

sortArr[j][0] = sortArr[j-increment][0];

sortArr[j][1] = sortArr[j-increment][1];

j = j-increment;

}

sortArr[j,0] = temp;

sortArr[j,1] = temi;

}

if (increment == 2) increment = 1;

else increment = (increment / 2.2);

}

Metatrader known bugs ... Coding help Any rookie question, so

learning 2014.10.04 09:55 #78

mladen:
Metatrader does not know how to sort multidimensional arrays

Here is a simple shell sort procedure that is sorting 2 dimensional array in this case. It is easy to extend it to any dimension of the array :

//------------------------------------------------------------------

//

//------------------------------------------------------------------

//

// shell sort

//

void SortIt(double& sortArr[][2])

{

int size = ArrayRange(sortArr,0);

int increment = size / 2;

//

while (increment > 0)

{

for (int i = increment; i < size; i++)

{

int j = i;

double temp = sortArr[0];

double temi = sortArr[1];

while ((j >= increment) && (sortArr[j-increment][0] < temp))

{

sortArr[j][0] = sortArr[j-increment][0];

sortArr[j][1] = sortArr[j-increment][1];

j = j-increment;

}

sortArr[j,0] = temp;

sortArr[j,1] = temi;

}

if (increment == 2) increment = 1;

else increment = (increment / 2.2);

}

mladen

Thanks for this. One more question : how can I find out the size of the second dimension?

Mladen Rakic 2014.10.04 11:30 #79

apprentice coder:
mladen Thanks for this. One more question : how can I find out the size of the second dimension?

Use ArrayRange(sortArr,1) for the second dimension

learning 2014.10.04 13:55 #80

mladen:
Use ArrayRange(sortArr,1) for the second dimension

Got it. Thanks

Code snippets - page 8