Support in the processing of our workshops
When editing our workshops there are a few typical sources of errors, which are listed here. If you get an error message, this may be due to the notation required by the Julia programming language.
| Typical input error | Wrong input | Correct input |
| Comma as decimal separator | 1,5 | 1.5 |
| Wrong arithmetic symbol for multiplication | 2 x 4 | 2 * 4 |
| Use of sine, cosine and tangent in radians instead of degrees | sin(), cos(), tan() | are(), cosd(), tand() |
| Incorrect call of arc sine, arc cosine and arc tangent (degree measure) | sin^(-1), cos^(-1), tan^(-1) | asind(), acosd(), atand() |
| Input the number π as a character | π | pi |
| Copy formulas from text | sin(440-2π-t) | sin(440*2*pi*t) |
| Column vectors without semicolon between entries | [1 2 3 4] | [1; 2; 3; 4] |
| Systems of equations or matrices without a semicolon at the end of each line. | [ 1 2 3 3 1 0 3 1 -1 ] | [ 1 2 3; 3 1 0; 3 1 -1 ] |
| Copying numerical values instead of use of variables | 1.1 | s (variable in which this value is stored) |
| Incorrect spelling of variables (esp. upper and lower case) | Transmittertime, PMirror | transmitterTime, Pmirror |
| Input of words (strings), e.g. to complete sentences, without to complete sentences, without double quotation marks ". . . " | Word | "word" |
| ˆ is sometimes not accepted during input accepted | ˆ without space bar | After entering ˆ, press the press the space bar. |
| Played sounds cannot be heard be heard | Using the Firefox browser | Use of another browser (e.g. Chrome) |
| First code field is not executed | Execute first code field on every Execute worksheet, before subsequent code fields are processed. | |
| Kernel down after inactivity (especially with longer pause in editing) | In the upper right corner it says "No Kernel". | Click on "No Kernel" and select Julia |
| Markdown cell (text cell of the worksheets) were double clicked. | Edit mode opens | Text cell by clicking on the Run button |
| Input was entered correctly but not recognized as correct | Restart the kernel of the worksheet restart and run the complete worksheet again |