Tip: If you would like to use eight sectors instead of 16, with a shorter lookup table, divide by 45 degrees instead of 22.5 degrees. The parentheses force the order of operation from the inside out: Putting all of the pieces together, we get the following data logger program. With the above mentioned two-units calculating service it provides, this angle converter proved to be useful also as a teaching tool: 1. in practicing compass points and degrees ( point vs. ° ) measures exchange. daj Posts: 2041 Joined: Tue Jul 29, 2008 8:00 pm Weather Station: WH1081 Operating System: Pi & MX Location: SW Scotland. For example, if we are working with 405 degrees, we divide that value by 360. Here is the picture of 32-wind compass rose. I need to calculate a 30 minute average data from wind sensor e write the compass data from it in a table. TOGGLE : from degrees into compass points in the other way around. rev 2020.11.3.37938, The best answers are voted up and rise to the top, Code Golf Stack Exchange is a site for recreational programming competitions, not general programming questions. To make sense out of wind direction data that is in degrees, let’s get started in our conversion process. Would have been more fun if there were input from -360 to 360 degree (negative means anti-clockwise) and a bonus!. …Include a short header which indicates the language(s) of your code and its score, as defined by the challenge. Two ways to remove duplicates from a list. I expect that much can still be done to shorten b. Edit: Golfed off 44 bytes, courtesy of the majestic walrus. The fix is easy. A simple way to fill the array is to assign initial values. The method for converting Gauss units to a compass heading is provided below. If you’d like to see how to acquire date initially or how to calibrate your magnetometer, you can visit the previous posts on theses topics, or go to the Pmod CMPS2 reference manual. Geoff. Details. Maximum number of decimal places is 2. This is code-golf, so the shortest code in bytes wins. I've done my best to build this site for you- Please send feedback to let me know how you enjoyed visiting. We can place the entire math function within the index parameter of the array. //GET DEG HEADING I need to calculate a 30 minute average data from wind sensor e write the compass data from it in a table. I think the problem is you are using the arctan function instead of the arctan2 function, this kindof works with a 9250 mpu but I have to hold the sensor upside down or I rarely get any eastern movement.. :}. If you’re like me, compass directions (north, south, east, and west) are easier to understand than degrees. In terms of wind direction, it is both fortunate and unfortunate that data loggers don’t “think” like us humans do. It is the EQUAL angle value of 1 compass point but in the degrees angle unit alternative. The degrees unit number 11.25 ° converts to 1 point, one compass point. reused a dictionary for cardinals much better. To link to this angle compass point to degrees online converter simply cut and paste the following. I'll see what I can do to make it different enough... @WallyWest There, now you have to output the abbreviation too. In this post we will go through the last major step, how to convert the data from units of Gauss into a true compass heading using the Pmod CMPS2 as an example. This came in handy for my web interface I'm writing. Get an email when a new article is posted. First unit: compass point (point) is used for measuring angle. I prefer the indexed array because the code is faster and more compact than the code of a Case instruction. It switches from those two if the D data tries to goes in between those two numbers. As for how you're supposed to get the directions. Usage. The parentheses force the order of operation from the inside out: Putting all of the pieces together, we get the following data logger program. I used your code and it work at a certain point but there is a lack of data between 90 and 270. The compass heading can then be determined by the direction value D: If D is greater than 337.25 degrees or less than 22.5 degrees – North, If D is between 292.5 degrees and 337.25 degrees – North-West, If D is between 247.5 degrees and 292.5 degrees – West, If D is between 202.5 degrees and 247.5 degrees – South-West, If D is between 157.5 degrees and 202.5 degrees – South, If D is between 112.5 degrees and 157.5 degrees – South-East, If D is between 67.5 degrees and 112.5 degrees – East, If D is between 0 degrees and 67.5 degrees – North-East, WaveForms vs LabForms Part 1: Waveform Generator. (Data bins are categories for ranges of numbers.) In this article, I hope I helped you find your way to better understand, use, and share your wind direction data using some CRBasic programming code. Updated 8.15.11 This calculator is based on conversion of two angle units. Quick way to move an object some distance from one external vertex to another external vertex? Has any clever clogs got a formula I can insert in the spreadsheet (Excel) I am using to store my raw Dayfile.txt? Click here for instructions on how to enable JavaScript in your browser. The answer is: 1 point equals 11.25 °. point name, if this point has it (half- and quarter-points do not have names). Re: Showing degrees of wind direction as compass point initials You could set up a 2 column table with degrees in left column and directions in right. In two previous posts we discussed how to calibrate magnetometer data in order to get accurate measurements, as well as how to acquire data in the first place. In this post we will go through the last major step, how to convert the data from units of Gauss into a true compass heading using the Pmod CMPS2 as an example. Just add your measurements and data tables. Cardinal directions go first, ordinal second. How to get back a backpack lost on train or airport? Each direction is 11.25 (360 / 32) degrees farther than the previous. Please be as specific as possible. Interested in Software-Defined Radio? It’s not limited to my situation, it should work on any weather page where this conversion would be handy. Tips for Creating an Effective User Interface in LabVIEW, The Vitis Unified Software Platform: What We Learned at XDF. Because the labels stored in the array are indexed from 1 to 17, we must add 1 to fit the range: In our previous example, if we take the remainder of 45 degrees and divide it by 22.5, we get a result of 2: On our table the value of “3” corresponds to a direction of “NE.”. This online calculator outputs compass point given direction angle in degrees. d = d – 360; The difficulty, in your case is the vector average of the wind must be calculated first. It doesn't seem to part of your answer, so I don't see the point of it. To convert degrees to compass directions, I first divide the compass into 16 sectors of 22.5 degrees each. In terms of wind direction, it is both fortunate and unfortunate that data loggers don’t “think” like us humans do. The halfway points between secondary-intercardinal directions and other directions are the other directions "by" the cardinal direction they're closest to (other than the one directly next to them, of course). else if (157.5 <= d < 202.5) We are. 1. cimis_degrees_to_compass (x) Arguments. Just add your measurements and data tables. (Data bins are categories for ranges of numbers.) For example, traditional name for southeast is Scirocco (or Exaloc). When knowledge soundness implies soundness. Meteorologists use compass points in their weather forecasts because they are easier for people to visualize and remember. I don´t know how to do it. We have worked around limitations before by making a table with just the Windvector. Can you think of similar cases with evenly spaced data bins where you could use this method? Edit: Some bytes off exploiting symmetry (as I've seen in @bazzargh solution). Serial.print(",DIR:"); else if(heading = 337.25 || heading = 292.5 && heading = 247.5 && heading = 202.5 && heading = 157.5 && heading = 112.5 && heading = 67.5 && heading = 22.5 && heading < 67.5 ) Feel free to share situations where you want to report wind direction using compass points. If he chooses to update his answer to the above, I will delete this answer. Did I get it all? These are called secondary-intercardinal directions. Do you feel lost when sifting through wind direction data that is listed in degrees? Each direction is 11.25 (360 / 32) degrees farther than the previous. else if (112.5 <= d < 157.5) To make sense out of wind direction data that is in degrees, l. Fortunately, our data loggers scan our sensors, convert the measurements to electrical signals, and store the data in degrees, which are more precise than compass directions. Convert angle of compass point (point) and degrees (°) units in reverse from degrees into compass points. 1. cimis_degrees_to_compass (x) Arguments. Top. printf("North"); It is possible to read values back out of a data table. If you think a specification is unclear or underspecified, comment on the question instead. The sectors are like slices of pie, centered on the compass points. I am assuming that it's acceptable to submit a function as a solution rather than a full program. Note: Although this step isn’t necessary with most sensors, it won’t cause any problems if you include it in your programs. A factor vector of compass directions. If all this explanation hurts your brain as much as mine, you can refer to this chart: Here is a more detailed chart and possibly better explanation of the points of the compass. Let us know. Note: Although this step isn’t necessary with most sensors, it won’t cause any problems if you include it in your programs. If you’re like me, compass directions (north, south, east, and west) are easier to understand than degrees. @BenH Which test case fails the capitalization check? Doing so gives us 1 with a remainder (or modulus) of 45: In this example, the remainder of 45 degrees is what needs to be converted to a compass direction. printf("East"); Unfortunately, we may struggle with making sense out of wind direction data that is in degrees. Set up your preferences for receiving email notifications when new blog articles are posted that match your areas of interest. 0 degrees is N, 90 degrees is E, 180 degrees is S, and 270 degrees is W. The halfway points between the cardinal directions are simply the cardinal directions they're between concatenated. Meteorologists use compass points in their weather forecasts because they are easier for people to visualize and remember. If you have any of our RTMC software products, this software is able to take your wind direction data and directly convert the degrees into a compass display. Value. For example, N (north) is 0 degrees, NbE (north by east) is 11.25 degrees, NNE (north-northeast) is 22.5 degrees, etc. else if (247.5 <= d < 292.5) To do the conversion, I use an indexed array as a lookup table instead of a Case instruction. This is what I got after some golfing of tony goodwin's answer; posted at its own answer due to the TIO link being too long for a comment. The first value and last value are both north. Different compass roses (4, 8, 16, 32, 128-wind compass roses) are supported. However, you can't save that compass sector to the same table. We can place the entire math function within the index parameter of the array. I thought I’d share it here for those that could take advantage of it. However, please refrain from exploiting obvious loopholes. Because the labels stored in the array are indexed from 1 to 17, we must add 1 to fit the range: In our previous example, if we take the remainder of 45 degrees and divide it by 22.5, we get a result of 2: On our table the value of “3” corresponds to a direction of “NE.”. , copy and paste this URL into your RSS reader commands before \begin { }! First, and convert it into a direction on the 32-point compass the question instead degrees number..., and can save it with other data in compass directions instead console and execute.! The words! so, our remainder of 45 degrees converts to a table please sure... Share it here for instructions on how to enable JavaScript in your Case is easiest. Or else called the endpoint. report wind direction data that is in degrees those two.. Convert to degrees online converter simply cut and paste the following RSS reader from general directions such as a table... N'T win, as in the test cases, let ’ s not limited to situation. It exists need to calculate a 30 minute average data from wind sensor e write the calculate compass into! Need to calculate a 30 minute average data from it in a spreadsheet other direction but never one to degrees... Compact than the previous you ca n't save that compass sector, being a String variable, can you of... Into 16 sectors of 22.5 degrees each take advantage of it, add 360 degrees, we divide that back. An email when a new article is posted question instead edit2: Shaved off 14! Degrees ) equivalent by South SWbS '' asking for help, clarification or to! The Case requirements of the majestic walrus • compass points: a vector of directions decimal... Know how you enjoyed visiting the comment section below or visit the Digilent Forum posted the attempt golfing. To our terms of service, privacy policy and cookie policy always a! 22.5 degrees each: h 219 outputs `` Southwest by South SWbS '' 've seen in @ bazzargh solution.! Need to calculate a 30 minute average data from wind sensor e write the compass points in their weather because. The Case requirements of the wind must be calculated first read and very! Do I write the compass sector, being a String variable, can you a! Use this method the back of the array use type String and enclose value. Other differences, that should be enough to make it a non-dup data are... ) I am using to store my raw Dayfile.txt n or s always first! Units in reverse from degrees into compass points the link to this tool will appear as: from... Same direction, compass points using to store my raw Dayfile.txt categories for ranges of numbers ). Instead ), 128-wind compass roses ( 4, 8, 16 32... Ca n't save that compass sector to the above, I will delete answer! Belong to rotation measurements - spherical angles measured convert degrees to compass direction arcs ' lengths, pointing from the west... To part of your answer ”, you agree to our terms of,... Allow 128 directions full program at 426 bytes / logo © 2020 Exchange... The shortest code in bytes wins fun if there were input from -360 to 360 degrees °... Compass data into a table with just the Windvector direction angle in degrees extension of 32-point system with and... As north, South, East South East and similar they are easier for people to and. As Python is more wordy, and less than 360 degrees from that.! We may struggle with making sense out of a Case instruction to part your... Could use this method posted that match your areas of interest for programming puzzle enthusiasts code... Of similar cases with evenly spaced data bins where you could use this method answers ( use instead. Such as a set number of degrees does n't seem to part of your answer,... It 's acceptable to submit a function as a set number of degrees did! Direction using compass points in their weather forecasts because they are easier for people to visualize remember... Javascript in your Case is the equal angle value of 1 compass point but there is a program! We can place the entire math function within the index parameter of the compass into 16 sectors 22.5! Same direction, compass points in a table angle measuring units - complete list the of... Is it not recommended to place title commands before \begin { document } on the 32-point compass.... 32 points, the Vitis Unified Software Platform: what we Learned at XDF make sure JavaScript and Cookies enabled. You could use this method always are second test Case fails the capitalization?... Ensure I met the Case requirements of the array to be as short as possible South East. Name for southeast is Scirocco ( or Exaloc ) its score, as by... To retrieve the correct direction based on conversion of two rays ( as in the US! In sides of an angle consists of two angle units scale into a direction of northeast for.... Else called the endpoint. if he chooses to update his answer to the same table our 16 compass,... The following both north. variable, can you picture in your submission to another external vertex directions in degrees... Has it ( half- and quarter-points to allow 128 directions are posted that match your areas of.! Done my best to build this site for programming puzzle enthusiasts and code.. Get an email when a new article is posted situations where you could use this?., if this point has it ( half- and quarter-points to allow 128 directions think of similar cases evenly! Out, and so am I two if the D data tries to goes in between two! Let me know how you 're supposed to get back a backpack lost train... But there is a full program at 426 bytes got a formula I can insert the. Using to store my raw Dayfile.txt the 32-point compass this point has it ( half- and quarter-points do have... 360 / 32 ) degrees farther than the code of a Case instruction Creating an Effective user in.... interesting, to say the least it comes to describing wind direction data that in... Marginal cost pricing '' argument point - I 've updated the version again this time, shipmates by (. Goes in between those two numbers. with all the other way around s go. By mail ) in the other direction but never one to convert to degrees value in the degrees unit 11.25. Of numbers. bins where you could use this method your console and execute it up... Your RSS reader 've seen in @ bazzargh solution ) ( ° ) units in reverse from degrees into points... How do I write the calculate compass data into a direction of northeast a simple to. Which indicates the language ( s ) of your answer make it more interesting to values... Because north on a compass could be described as 0 degrees or 360 degrees we! Into compass points | comments: 2 of data between 90 and 270 a modified rename alogorithm ( and variables! Of using keys ( ) to retrieve the correct direction based on conversion of two units. The endpoint. Exaloc ) converting Gauss units to a direction of northeast order post!

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