Recent content by Willsong

Thank you for your comments. The pressure data was measured in a combustion engine cylinder. It is change with time and crank angle. The data shows the pressure trend, but it's noisy. So I want to remove the noise. Otherwise, I get unreasonable calculation result based on the measured pressure...

No, it is not at all. I'm building my own program to process experiment data. It is pressure data having a lot of noise. So I want to remove the noise. I'm studying FFT digital filtering over and over, but it is difficult to understand. Also, I don't know whether the digital filtering is the...

Thank you IRstuff. If you don't mind, could you talk to me specifically? Actually, I don't know what and how to use. I have spent almost a week on this. I don't have any progress. Please help me out. Thanks again.

Hi all, Does anybody know about data smoothing or filtering? I'm working on data processing. The experimental data has a lot of noise on it so I need to remove the data. I'm studying about filtering with FFT and trying to program a subroutine in Fotran. It is extremely tough to understand and...

I want to get right value for 'BURB'. I understand you about the binary numbers. I want to use 'Burb' as a indicator of interation. That's it.

Integer BURB DOUBLE PRECISION BUR BUR=3.6 BURB=1.0+(BUR+140.0)/0.2 In this code, 'BURB' is calculated as 718. I want 719.

IRstuff, The code is quite long. How can I post it?

Yes, I'm reading the manual. It is quite difficult to me. It is my first coding in my life. I'm learning and, at the same time, coding the program.

I appreciate your explanation. I understand what you mean. Frankly, I don't know how to check the numerical precision. Could you let me know how to check? Thank you.

Sorry about bothering you. I mean I want to use 3.6. But, during the computation, 3.5999 is used instead of 3.6 even though I input 3.6 as an value.

I need to use the value to calculate another value. I defined the value of 3.6 to "CA". The problem is that "CA" is called as 3.59999. It gave me wrong answer because the calculation is conducted with 3.5999.

No, it is not. I am working on a code for my research. I'm just biginner of Fortran. Thank you.

Hi all, I am making a code using fortran77. I input 3.6. Strangely when I call the value, it gives me 3.5999. Do you know how to fix this problem? Please help me. Thank you.