How to Remove Leading Digits in Index Price

[Taddypole]

In the following DrawText method, I would like to remove the leading digits of the Russell 2000 index. If the Index is trading at 1121.40 I would like to only display 21.4. I have been able to remove the trailing "0" but haven't found a way to remove the leading "11".

DrawText("Low[0]",true," < " + Convert.ToString(string.Format("{0:0.0}",Low[0] - 1 * TickSize)),-6,Low[0] - 1 * TickSize, 0, Color.DarkRed, textFontSmall, StringAlignment.Center, Color.Transparent, Color.Transparent, 0);

regards,
taddypole...

[NinjaTrader_CalH]

Hello Taddypole,

Thank you for your post.

You might be able to use .TrimStart() for the string that you are returning for the TF

Example -

string s = Close[0].ToString().TrimStart(new Char[] { '1' });

http://msdn.microsoft.com/en-us/libr...v=vs.110).aspx

[Taddypole]

Thank you Cal,

I was reading the Microsoft pages but still couldn't figure it out. Now have it working.

[koganam]

Thank you Cal,

I was reading the Microsoft pages but still couldn't figure it out. Now have it working.

What about if we get to 1210.30 or 1092.20? That is, if the first 2 characters are not both "1".

Of course, you could make the array of removal characters contain: 0, 1, 2, on the assumption that we are not ever getting to 1300+ or less than 1000.

If you want to have just the last 5 characters in the string, you should probably be looking at String.Substring() instead.

ref: http://msdn.microsoft.com/en-us/libr...vs.110%29.aspx

[Taddypole]

Thanks Koganam,

I tried your suggestion and have run into another snag. If I use a substring of (2,2) I can get the "22" in 1122.4 for example. But if I use a substring of (2,3) [or anything higher than 3 for the length] - I get an argument out of range exception. "Index and length must refer to a location within the string".

I'm thinking it is having a problem with the decimal. Does Substring only work on integers?

regards,
taddypole...

[koganam]

Thanks Koganam,

I tried your suggestion and have run into another snag. If I use a substring of (2,2) I can get the "22" in 1122.4 for example. But if I use a substring of (2,3) [or anything higher than 3 for the length] - I get an argument out of range exception. "Index and length must refer to a location within the string".

I'm thinking it is having a problem with the decimal. Does Substring only work on integers?

regards,
taddypole...

You may have missed a cast? Would you mind posting the actual code line that you are attempting to use?

[Taddypole]

My bar type is a renko chart and I'm trying to plot the value that the bar will reverse. I plot the "own" time frame and a higher time frame channel.

I've been playing around with converting to string, using the Substring method and then converting back to a Double. It kind of works but looks like it needs some padding because sometimes there are 2 digits and sometimes 3.

Haven't coded the breakout's (reversals) yet.

Code and picture are attached...

[koganam]

My bar type is a renko chart and I'm trying to plot the value that the bar will reverse. I plot the "own" time frame and a higher time frame channel.

I've been playing around with converting to string, using the Substring method and then converting back to a Double. It kind of works but looks like it needs some padding because sometimes there are 2 digits and sometimes 3.

Haven't coded the breakout's (reversals) yet.

Code and picture are attached...

A little testing, with a liberal sprinkling of Print()'s all over the place, showed that double.ToString(), somewhat shockingly to me, drops trailing zeros on the decimal portion of a double. Hence our strange "index overflow" error. That means that we have to explicitly format our double when we convert it to string!

                    double testDouble = 1123.50;
                    Print("testDouble - 0.00 format: " + testDouble.ToString("0.00").Substring(2, 5));
                    Print("testDouble - #.00 format: " + testDouble.ToString("#.00").Substring(2, 5));
                    Print("testDouble - F2 format: " + testDouble.ToString("F2").Substring(2, 5));

all work.

[Taddypole]

Thanks Koganam,

Exactly what I was looking for. Works perfectly now.