While programming a sample program in my TI-84 calculator, I was wondering if there were a way to initialize multiple variables to a single value in one line?
I tried doing
0 -> A,B,C,D
However this did not work for the calculator. I know you can do each one on an individual line, but my question is, is it possible to initialize multiple variables to a single value at once in TI-BASIC?
No. You cannot initialize multiple variables to a single value at once in TI-Basic.
However, you can:
Set all values in an array or matrix to the same value at once.
Initialize variables to zero in three bytes instead of four using DelVar (variable) and then leaving off the following colon. For example, instead of doing :0->A:0->B:Disp A,B you can do :DelVar ADelVar BDisp A,B.
Remember that uninitialized variables are treated as zero when first used.
No, you can't set multiple variables at once with one value. But if you just want them on the same line, you can use a colon like this 0→A:0→B. If you really feel like it, you could make another program that zeroes out every variable and just call it from within your program like this.
PROGRAM:ZERO
:0→A
:0→B
:0→C
...
PROGRAM:OTHER
:prgmZERO
...
Related
Hi, I'm pretty new to gamemaker and I'm trying to set a variable (global.b1) to the first value of "global.level_data". For example, global.b1 will be set to mimic the blue outline of "global.level_data"'s first value, which is 0. Can anyone tell me how to do this?
If I look at it correctly, you want to get the first value of an array
I think this should suffice:
global.level_data = [0,0]
global.b1 = global.level_data[0];
It may look confusing if you're not familiar with how arrays work, but the [0] represents the first value of the array (which happens to be 0 as well). The count of arrays also starts with 0 instead of 1.
For further understanding about arrays, I recommend reading this: https://manual.yoyogames.com/GameMaker_Language/GML_Overview/Arrays.htm
And as a side note: if you're creating new variables, the values in that variable will usually not update it's original form (e.g. changing the value global.b1 will not change the value in global.level_data[0] unless you set that yourself).
If you prefer the latter, then I think you're better off using global.level_data[0] for getting and setting directly
two values of the matrix A are changing as you can see in the picture. Why is this happening? What can I do to solve it?
I tried 'Execute the entire worksheet' but could not solve it.
The Matrix which you first assign to A contains the name C in the formulas used for both the A[2,3] and A[3,2] entries.
And then you assign a Vector to the name C.
So, of course, that affects those two entries of A.
If you don't want that to happen then choose use two different names for the two different purposes, eg. C for the Vector and CP in the entries, or vice versa.
You will always run into trouble if you try to use the same name to mean two different things. That's not just a Maple issue: it'll happen to you in math, and in other programming languages.
I have a huge list in which I put different variables in order to apply the same function to all of them.
In a next step I want to apply specific functions to specific elements of the list, i.e. all functions used vary from element to element within the list.
How can I do this? My first idea was (see my other question, Reassign variables to elements of list) to split the list into the original variables again. This can be done.
But I was recommended to keep the items in the list instead. My questions is: How can I access each variable quickly by doing that? One idea would be to use the names attribute of the list in the beginning and fill it with a vector of the original variable names. However, by doing that it would be much longer later on to type list["name_x"] than just typing name_x assuming name_x is globally available.
What is the most efficient way to deal with my problem?
What I'm trying to achieve is to have all printed numbers display at maximum 7 digits. Here are examples of what I want printed:
0.000000 (versus the actual number which is 0.000000000029481.....)
0.299180 (versus the actual number which is 0.299180291884922.....)
I've had success with the latter types of numbers by using options(scipen=99999) and options(digits=6). However, the former example will always print a huge number of zeros followed by five non-zero digits. How do I stop this from occurring and achieve my desired result? I also do not want scientific notation.
I want this to apply to ALL printed numbers in EVERY context. For example if I have some matrix, call it A, and I print this matrix, I want every element to just be 6-7 digits. I want this to be automatic for every print in every context; just like using options(digits=6) and options(scipen=99999) makes it automatic for every context.
You can define a new print method for the type you wish to print. For example, if all your numbers are doubles, you can create
print.double=function(x){sprintf("%.6f", x)}
Now, when you print a double (or a vector of doubles), the function print.double() will be called instead of print.default().
You may have to create similar functions print.integer(), print.complex(), etc., depending on the types you need to print.
To return to the default print method, simply delete the function print.double().
Are all your numbers < 1? You could try a simple sprintf( "%.6f", x ). Otherwise you could try wrapping things to sprintf based on the number of digits; check ?sprintf for other details.
I'm trying to create a histogram of an image. I was thinking to first bubblesort the array of the pixels so every number is sorted from low to high.
Then its easier to count how many times a specific value of a pixels appears. And then later I can put it in a graph.
But it always gives an error then I don't understand.
I also want to make everything with the formula node instead of just blocks.
Visual:
http://i.stack.imgur.com/ZlmW2.png
Error:
http://i.stack.imgur.com/91TbS.png
In your code numbers is a scalar not an array.
Besides that the formula node does not maintain state, you'll need a feedback node to get history. Is there any reason why do you want to use the formula node instead of native LabVIEW code?
You need to remove the two nested LabVIEW for loops, you are iterating through your array inside the formula node so you don't need to do it with the loops.