Is is possible in SPSS to store a value in a variable (not a variable created in a data set)?
For example I have a loop for which I want to pass the value 4 to all the locations in the loop that say NumLvl.
NumLvl = 4.
VECTOR A1L(NumLvl-1).
LOOP #i = 1 to NumLvl-1.
COMPUTE A1L(#i) = 0.
IF(att1 = #i) A1L(#i) = 1.
IF(att1 = NumLvl) A1L(#i) = -1.
END LOOP.
EXECUTE.
You can do this using DEFINE / !ENDDEFINE SPSSs Macro Facility, for example:
DEFINE !MyVar () 4 !ENDDEFINE.
You can then use !MyVar as a substitute for 4 wherever in your syntax you wish.
See DEFINE / !ENDDEFINE documentation for further notes.
Related
I've made a small program that is supposed to read data in a range input it into an object oriented program, and then return the full data set. the issue is that when I run the file it only return data on the third procedure
I tried printing other procedure sets but idk how to do that, i'm thinking this will only work if i replace the procedures from generic to specific. as in instead of Procedure name for all of them procedures 1, 2, and 3
for i in range (3):
procedure_name = ('Physical Exam')
date_of = ("Nov 6th 2022")
doctor = ('Dr. Irvine')
charge = ('$ 250.00')
procedure_name = ('X-ray')
date_of = ("Nov 6th 2022")
doctor = ('Dr. Jamison')
charge = ('$ 500.00')
procedure_name = ('Blood test')
date_of = ("Nov 6th 2022")
doctor = ('Dr. Smith')
charge = ('$ 200.00')
procedure = HW6_RODRIGUEZ_1.Procedure(procedure_name,date_of,doctor,charge)
print(f'Procedure {i+1}')
print(procedure)
print(i, end=" ")
if name == 'main':
main()
So, I think you may have misunderstood some things when it comes to variables, OOP and looping.
When you define a variable, that variable is set to the last value it is assigned. So if you have the following code:
a = 1
a = 2
a = 3
The final value of the variable 'a' will be 3, as that is the last value it is assigned.
As for loops, whatever you have written in a for loop will be repeated for a specified number of times. This means if you want to write a loop that prints "hello" 5 times, you'd write the following:
for i in range(5):
print("hello")
What your loop is essentially doing is overwriting the same 3 variables 3 times over, this won't be assigning new values to an object.
When it comes to creating an object that you assign variable to, you need to first write the code for your class. Your class can have attributes like the variables you've stated. It could look something like this:
class procedure:
def __init__(self, procedure_name, date_of, doctor, charge):
self.procedure_name = procedure_name
self.date_of = date_of
self.doctor = doctor
self.charge = charge
Now, to set up a procedure object, you just assign a variable to procedure with the desired variables as parameters, like so:
new = procedure('X-ray','Nov 6th 2022','Dr. Jamison','$ 500.00')
And to access a variable, you just need to write procedureName.attribute. For example, using the object I just set up:
print(new.doctor)
Would output 'Dr. Jamison'.
If you want to store a bunch of them, I would recommend storing them in a list or a dictionary, depending on how you want to look them up.
I hope this helps! If you are new to programming, I would recommend some simpler programs such as a program that prints the nursery rhyme 10 green bottles using loops, or maybe making a quiz.
Best of luck.
I need to change the element of b (change 1 to 0 and 0 to 1 ) to get new parameter c(j). I want to use macro option, is it possible?
set j/1*100/;
parameter b(j) ,c(j);
*suppose b(j) initialized
c(j)=b(j);
loop(j,
if(c(j)=1,
c(j)=0;
else
c(j)=1;
);
Thanks!
It is possible to do this in a macro. However, if you just want to toggle 0/1, you can also simply use the not operator. Look at this modified version of your code:
set j/1*100/;
parameter b(j) ,c(j);
* Fill with random data
b(j) = uniformInt(0,1);
* Note: This is actaully not necessary; you could also use b directly below
c(j)=b(j);
c(j) = not c(j);
I am using a live data API that is returning the next arriving trains. I plan on giving the user the next 5 trains arriving. If there are less than 5 trains arriving, how you handle that? I am having trouble thinking of a way, I was thinking a way with if statements but don't know how I would set them up.
time1Depart = dataReturnedFromLiveAPI{1,1}.orig_departure_time;
time2Depart = dataReturnedFromLiveAPI{1,2}.orig_departure_time;
time3Depart = dataReturnedFromLiveAPI{1,3}.orig_departure_time;
time4Depart = dataReturnedFromLiveAPI{1,4}.orig_departure_time;
time5Depart = dataReturnedFromLiveAPI{1,5}.orig_departure_time;
time1Arrival = dataReturnedFromLiveAPI{1,1}.orig_arrival_time;
time2Arrival = dataReturnedFromLiveAPI{1,2}.orig_arrival_time;
time3Arrival = dataReturnedFromLiveAPI{1,3}.orig_arrival_time;
time4Arrival = dataReturnedFromLiveAPI{1,4}.orig_arrival_time;
time5Arrival = dataReturnedFromLiveAPI{1,5}.orig_arrival_time;
The code right now uses a matrix that goes from 1:numoftrains but I am using just the first five.
It's a bad practice to assign individual value to a separate variable. Better if you pass all related values to a vector or cell array depending on class of orig_departure_time and orig_arrival_time.
It looks like dataReturnedFromLiveAPI is a cell array of structures. Then you can do:
timeDepart = cellfun(#(x), x.orig_departure_time, ...
dataReturnedFromLiveAPI(1,1:min(5,size(dataReturnedFromLiveAPI,2))), ...
'UniformOutput',0 );
timeArrival = cellfun(#(x), x.orig_arrival_time, ...
dataReturnedFromLiveAPI(1,1:min(5,size(dataReturnedFromLiveAPI,2))), ...
'UniformOutput',0 );
Then you how to access the values one by one as
time1Depart = timeDepart{1};
If orig_departure_time and orig_arrival_time are numeric scalars, you can use ...'UniformOutput',1.... You will get output as a vector and can get single values with timeDepart(1).
Basically:
I am making a game in the LÖVE Engine where you click to create blocks
Every time you click, a block gets created at your Mouse X and Mouse Y
But, I can only get one block to appear, because I have to name that block (or table) 'object1'
Is there any way to create table after table with increasing values? (like object1{}, object2{}, object3{}, etc... But within the main table, 'created_objects')
But only when clicked, which I suppose rules out the looping part (but if it doesn't please tell me)
Here's my code so far, but it doesn't compile.
function object_create(x, y, id) **--Agruments telling the function where the box should spawn and what the ID of the box is (variable 'obj_count' which increases every time a box is spawned)**
currobj = "obj" .. id **--Gives my currently created object a name**
crob.[currobj] = {} **--Is supposed to create a table for the current object, which holds all of its properties. **
crob.[currobj].body = love.physics.newBody(world, x, y, "dynamic")
crob.[currobj].shape = love.physics.newRectangleShape(30, 30)
crob.[currobj].fixture = love.physics.newFixture(crob.[currobj].body, crob.[currobj].shape, 1) **--The properties**
crob.[currobj].fixture:setRestitution(0.3)
But what should I replace [currobj] with?
Solved
Found what I was looking for. Here's the code if people are wondering:
function block_create(x, y, id) --(the mouse x and y, and the variable that increases)
blocks[id] = {}
blocks[id][1] = love.physics.newBody(world, x, y, "dynamic")
blocks[id][2] = love.physics.newRectangleShape(45, 45)
blocks[id][3] = love.physics.newFixture(blocks[id][1], blocks[id][2])
blocks[id][3]:setRestitution(0.2)
blocks[id][4] = math.random(0, 255) --The Color
blocks[id][5] = math.random(0, 255)
blocks[id][6] = math.random(0, 255)
blockcount = blockcount + 1
i would probably do something like this.
local blocks = {} -- equivalent of your crob table
function create_block(x, y)
local block = funcToCreateBlock() -- whatever code to create the block
table.insert(blocks, block)
return block
end
if you wanted to get a reference to the block you just created with the function, just capture it.
-- gives you the new block, automatically adds it to the list of created blocks
local new_block = create_block(0, 10)
that sticks block objects in your block table and automatically gives each one a numeric index in the table. so if you called create_block() 3 times for 3 different mouse clicks, the blocks table would look like this:
blocks = {
[1] = blockobj1,
[2] = blockobj2,
[3] = blockobj3
}
you could get the second block obj from the blocks table by doing
local block2 = blocks[2]
or you could loop over all the blocks in the table using pairs or ipairs
for idx, block in pairs(blocks) do
-- do something with each block
end
sorry if this doesn't exactly answer your question. but from what you wrote, there didn't seem to be a real reason why you'd need to name the blocks anything specific in the crob table.
If you want those tables to be global, then you can do something like:
sNameOfTable = "NAME"
_G[sNameOfTable] = {1,2}
and then you will have a table variable NAME as depicted here (Codepad).
Otherwise, if you want it to be a child to some other table, something like this would also do:
tTbl = {}
for i = 1, 20 do
local sName = string.format( "NAME%02d", i )
tTbl[sName] = {1,2}
end
for i, v in pairs(tTbl) do
print( i, v )
end
Don't worry about the unsorted output here(Codepad). Lua tables with indexes need not be sorted to be used.
Sometimes ABAP drives me crazy with really simple tasks such as incrementing an integer within a loop...
Here's my try:
METHOD test.
DATA lv_id TYPE integer.
lv_id = 1.
LOOP AT x ASSIGNING <y>.
lv_id = lv_id+1.
ENDLOOP.
ENDMETHOD.
This results in the error message Field type "I" does not permit subfield access.
You already answered the question yourself, but to make things a bit clearer:
variable + 1
is an arithmetic expression - add 1 to the value of the variable.
variable+1
is an offset operation on a character variable. For example, if variable contains ABC, variable+1 is BC.
This can be especially confusing when dealing with NUMCs. For example, with variable = '4711', variable + 1 is evaluated to 4712, whereas variable+1 is '711' (a character sequence).
The error you saw occurred because it's not possible to perform the index operation on a non-character-like variable.
You mean like:
ADD 1 to lv_id.
By the way, when you loop over an internal table, SY-TABIX has the loop counter.
Uh, I got it.
It's the f****** spaces...
lv_id = lv_id + 1
works...
Simple
DATA : gv_inc type I .
place this statement in loop
gv_inc = gv_inc + 1 .
from SAP NetWeaver Version 7.54 you can also use:
lv_id += 1.
Instead of
lv_id = lv_id + 1.
Happy coding!
If you are going to increment every loop cycle than you can directly get the table size.
describe table x lines data(lv_id). "Out side of the loop.