All Questions
Tagged with floating-point integer
78
questions with no upvoted or accepted answers
6votes
0answers
1kviews
Representing a float or a binary as a 32 bit signed integer in R
I've been given a task to write an API for the AR.Drone 2.0 in R. I know it's probably not the wisest choice of language as there are good validated APIs written in Python and JS, but I took the ...
- 355
4votes
3answers
384views
How to preserve raster dataType in raster processing?
When doing raster math, for example raster1-raster2, the datatype of the output raster is 'FLT4S', even if the datatype ot both raster1 and raster 2 is 'INT2S'. How can I force the output to be 'INT2S'...
- 41
2votes
0answers
29views
IEEE integer standard
IEEE 754 defines floating point standards for computers. Is there such a similar standard for integers? Whenever I search for something like that, I end up at IEEE 754!
C/C++ defines char, short, int, ...
- 1,110
2votes
2answers
57views
I want to generate a for loop using decimals. I need the y value from the loop to create a list. This is a project and I cant use numpy
float object cannot be interpreted as an integer
I want to generate a for loop using decimals. I need the y value from the loop to create a list.
This is a project and I cant use numpy.
Are there any ...
- 23
2votes
1answer
253views
Stochastically rounding a float to an integer
I want a function (using Python 3.6+ if it's relevant) that will stochastically round a floating-point number to an integer in the following manner:
Given a real number, x, let a = floor(x) and let b ...
- 533
2votes
0answers
478views
Recorded sound gets noisy/distorted when datatype is 32 bit float
I recorded sound from microphone on my computer by python with pyaudio. It works fine when sound is recorded in 16 bit integer as its data type. However, it does not work when it is recorded in 32 bit ...
- 79
2votes
1answer
318views
How do you convert data from float64 to int16 in python 3?
Currently I am using soundfile to read audio data from a wav file like so:
import soundfile
raw_data, sample_rate = soundfile.read(filename)
Whilst I realise that you can select dtype=int16, I would ...
2votes
1answer
2kviews
Getting only integers when dividing a pandas dataframe by a pandas series
I am trying to divide a dataframe by a pandas series and the result is only giving ones everywhere.
Here is the example :
This is my dataframe df
This is my pandas series s
this is what I am ...
- 31
2votes
0answers
108views
Pandas - dtype shows int, but describe shows float
I have changed my variable age to an integer since it was stored as a float:
sessions['age'] = sessions['age'].astype(int)
Pandas dtypes returns an int:
In: sessions['age'].dtype
Out: dtype('int64')...
- 305
2votes
0answers
1kviews
default to floats in python
I'm writing some code that uses GPS coordinates but I'm running into a headache with python 2. I'm using the dronekit python library to be specific. Here's a sample of what I'm trying to do.
...
- 21
2votes
1answer
1kviews
Reliably detect integer overflow/underflow
I'm working on code that has to do the following with the result of a calculation:
If the result exceeds the limit that can be represented in PHP's integer type then throw an exception.
If the ...
- 30.1k
1vote
0answers
31views
C++ ignores the second input if the type of the first input in not correct
This is the code:
#include <iostream>
using namespace std;
int main()
{
int var1;
float var2;
cout << "input var1:";
cin >> var1;
cout << "...
- 13
1vote
3answers
357views
Determine if a variable is a float or an integer in java
I need to write a program which uses multiple methods called average which return the average of those values, if both are ints the value returned should be an int, and if one or more is a floating ...
- 21
1vote
1answer
40views
What's the easiest way to prevent a user from entering a letter when the program asks for a number?
Say I have a float variable called "varFloat" and I use cin to allow the user to input a number, how can I prevent the user from entering a letter?
I have a calculator program that breaks if a letter ...
1vote
0answers
31views
Should Random Forest in R take far longer to run with floats vs integers?
I have a dataset that I am running a Random Forest routine on in R (using caret). The raw data (all integers) finishes pretty rapidly; if I normalize so that the values are all floats (between 0 and ...
- 80
1vote
1answer
92views
What integer operations can be efficiently emulated using floating point?
I need to work on a processor that natively supports 16-bit integer math and 32-bit floating point operations.
Some of the algorithms that are targeting the processor require integer math accuracy ...
- 7,210
1vote
0answers
45views
Why does adding the integer 1 to another integer, then cast to a float give me .99?
I am in a visual programming class, trying to make a GUI in Processing that will eventually control an Arduino MeArm. I have a controlP5 element for each of the 4 servos, whose values are stored as ...
- 11
1vote
1answer
66views
JavaScript: Decimal part of a float is caught by integer regex
I am trying to differentiate if a user's input is a float or an integer. However, when a user enters a float, the whole input is considered a float but the decimal part of it is considered an integer, ...
- 21
1vote
1answer
2kviews
Comparing a Float with an Int in SSRS
I have a field where I'm using LEN() to calculate the string length and then I'm comparing this to a value generated by AVG(CONVERT(FLOAT,LEN(some_field))).
The point of the comparison is to do THIS ...
- 1,278
1vote
4answers
1kviews
how to get percentage rounded to an integer
Example:
150 blue balls
250 red balls
What are the percentage of blue balls?
150 divided by total balls (400) equals 38 percent
if I set it
blue_balls = 1.0 * number_of_blue_balls / (...
1vote
2answers
1kviews
Traceback error: TypeError float object cannot be interpreted as an integer
Could someone help me figure out the problem I have with this?
def marbles():
marbles = 0
while True:
try:
x = eval(input("How many marbles? "))
except ValueError: ...
1vote
2answers
2kviews
Converting remainder of a floating point float/double into an int
I have a double (or float) number x:
x = 1234.5678;
Now, the question is, how do break down the number into 2 int's whereas int1 would get the number before the point, and int2 is the number after ...
- 2,222
1vote
3answers
609views
comparing floats precisely after a cross product operation
This is about performing the following comparison precisely :
CrossProduct(P - P0, P1 - P0) >, < or == 0
Problem definition
Given a set of grid points described by the following equation
P(x,...
- 71
0votes
0answers
24views
How to calculate change in coins in python
I was given a prompt that asks to input any amount of money and print how many of each coin is needed for that amount of money. For example, 2.05 would be 8 quarters and 1 nickel. I thought I had it ...
- 1
0votes
2answers
75views
How to convert the values of all fields in data frame from decimal to integers
We have a data frame of 1.1 Million rows X 4300 Columns. The data frame contains different floating values in different columns , example of one of the field value is 0.567. In order to read the ...
0votes
1answer
175views
seaborn scatterplot x/y ticks datatype are switched (float values to int, and vice versa)
I'm using seaborn scatterplot to plot engine 'liter' values (float) vs engine 'cylinder' values (integer).
There are three 'cylinder' values- 4, 6, and 8. However the ticks for cylinders on the ...
- 11
0votes
0answers
46views
Python, compare if a Float is close to an Integer
I'm coding a program to analyse sentiments in Tweets. I want to perform a test where I have a dataset of Tweets like this :
label,text
0, blabla
1, blablabla
0, blablablabla
where label is ...
- 626
0votes
0answers
20views
Floating Point Arithmetic, Integer Overflow cannot turn to 0 right?
{
double piApprox = 0; /* Save the result in this variable */
double epsilon = 0.0001;
int i = 0; /* Write the amount of iterations needed in this variable */
double lim = 0;
/* ...
0votes
2answers
126views
How do I check if a string can be converted to a float or integer value without using try/except?
I have an assignment for my first year programming class in which one of the parts is to convert a string to an integer or float value. However, if the string is not convertible it should pass a value ...
0votes
1answer
26views
Rounding issue when finding integers inside the interval with float bounds
I have a code which does the following. In some loop, it solves quadratic inequality (ax^2 + bx + c <= 0, a > 0) and finds integer numbers between the roots (using my own function integer_inside)...
- 183
0votes
1answer
102views
Int to Float conversion Python to C++
I have a function written in Python that works perfectly for what I need(it wasn't written by me).
I need to convert it to C++ so that it provides the same outcome. I know that it saves that float ...
0votes
1answer
403views
csv importing latitude column as float need it to be numeric
After importing a csv file, i plot it using streamlit.
The issue is that the column type imported for the lat/long is are float. How do I transform this float into a readable format?
I have tried a ...
- 1
0votes
1answer
413views
Constrain numpy to automatically convert integers to floating-point numbers (python 3.7)
I have just made the following mistake:
a = np.array([0,3,2, 1])
a[0] = .001
I was expecting 0 to be replaced by .001 (and the dtype of my numpy array to automatically switch from int to float). ...
- 413
0votes
1answer
537views
'float' object has no attribute 'item' when trying to map on series
When I try to convert float64 to float of a single value, it works fine -
import pandas as pd
a=pd.DataFrame()
a['Num']=['1','2','3','4']
a
def float(x):
return x.item()
float(a['Num'].astype('...
0votes
1answer
31views
Strange issues summing ints and floats
Can someone please explain this to me?
I was writing a def (program) to convert text into numbers and wanted to ensure if it was just ints, the representation was ints and if floats, floats. If a ...
- 41
0votes
0answers
58views
Python lossy conversion from float to int
I am trying to figure out a way to write 21*(10^21) in Python. I've tried two approaches. The first one is simply by doing the following:
>>> print(21*(10**21))
21000000000000000000000
This ...
0votes
0answers
52views
Strange float to int conversion with Visual Studio 2010
Let us say I have
float val = 99999.9;
When I do this:
int val2 = val*100;
val2 is equal to 9999989 in Visual Studio 2010.
However, if I do the same with other compilers (like GCC for example), ...
- 31
0votes
3answers
717views
Conversion from float (native float or numpy.float64) to integer not working
I have a dataframe thats loaded with floats and NaNs. I need to convert all the decimals/floats to integers. I checked that all types are numpy.float64 but my conversion to integer does not work. This ...
- 71
0votes
0answers
109views
TypeError: unsupported operand type(s) for +: 'float' and 'Time'
I'm trying to get this to work, it seems like the problem is when I try to add an hour and a decimal representing time (ex. .75 equating to 45min). I think I need to add something to the init() ...
- 13
0votes
0answers
445views
Check if byte string represents float or int
I have some byte strings and I don't know if they are integers or floats.
Lets create some example data:
import numpy as np
arr_int = np.array([17, int(1e10), 34567])
arr_float = np.array([17.17,...
- 4,026
0votes
1answer
37views
Need help converting string or int to float
So I have been stuck on this one for a while and could use some help. I have been trying to fix this code and I keep getting an error about invalid syntax. So here is the code I need help with need to ...
0votes
0answers
77views
Floating point exception with big numbers and inaccurate results when changing integers to longs
I was given this problem which gives you 2 integers n and m, n representing the number of figures of the second number, and the second number is a binary number. For example:
n= 2
m= 11
...
- 9
0votes
0answers
361views
How to convert 64FC1 float numbers to "bgr8" uint to publish in ROS?
I need to publish an image after sobel operator, however ROS message does not support float numbers. So how can I publish edge detection message?
pub = rospy.Publisher('detector', Image, queue_size=...
- 85
0votes
2answers
529views
Float is not converting to integer pandas
I used this code to convert my float numbers into an integer, however, it does not work. Here are all step I gone through so far:
Step 1: I converted timestamp1 and timestamp2 to datetime in order ...
- 311
0votes
1answer
166views
Excel: How to find closest number in table, many times
Excel
Need to find nearest float in a table, for each integer 0..99
https://www.excel-easy.com/examples/closest-match.html explains a great technique for finding the CLOSEST number from an array to a ...
- 106
0votes
0answers
202views
How to recast float to integer for selected column numbers in Hive?
A number of columns containing what appeared to be 0/1 integer values in my Hive table are rewritten as 0.0 or 1.0 float values after pulling the table into a Python data frame. Therefore what I ...
- 724
0votes
2answers
406views
How to find out the size of a float in PHP?
I'm using PHP 7.2.5(installed using the latest version of XAMPP) on my machine that runs on Windows 10 Home Single Language 64-bit operating system.
As per my knowledge, in PHP, the sizes of an ...
user9059272
0votes
0answers
789views
QString to double long float and long long int
Is it possible to convert the part before the decimal point to long long int and the part after the decimal point to long double float?
Example:
QString "1101.110";
and I would like to change that ...
- 39
0votes
1answer
21views
Calculation of integer and a floating number
Im trying to calculate an integer and a floating number. Sounds like something easy right?
However when I execute the following code:
<?php
$decimals = 2;
$dec_point = ',';
$thousands_sep = '.';
...
- 1
0votes
0answers
35views
Packing integer as floats, finding original ints
We are packing two 12 bits integers into three 8 bits RGB colors to convey values to a GPU.
The process goes like this:
Two 16 bits integers are generated (U and V)
They are decimated to two 12 ...
- 713