Numpy loa could not convert string to float. float32 -> "python float" numpy.

Numpy loa could not convert string to float csv file containing text and numbers using genfromtxt in numpy. 21. Because this data also contains strings I am importing the full array as a string. 18. 16. What you actually did was to stick a single character into the array. float64 -> "python float" numpy. Ask Question Asked 5 years, 9 months ago. so using pandas will not help. Asking for help, clarification, I was looking for a vectorized approach to this problem and came up with the following solutions. 2, 0. TensorShape Any tensor returned by print(float(a)) ValueError: could not convert string to float: '123. I can not change my string to float value. split(',') x. 12, 0. astype('str'). 3165258 0. fromhex(x) --> 736 return float(x) ValueError: could not convert string to float: '[[-4. 0. Modified 5 years, 9 months ago. When i try to use data = np. 04662842 0. from matplotlib numpy. asarray() is a NumPy function that converts the Next, suppose you attempt to convert the string data into a float using the float() function as follows: np. Viewed 968 times 0 . Asking for help, clarification, ValueError: could not convert string to float---how to convert a list of lists of strings into a numpy array type float? 0 Could not convert String to float in numpy ndarray numbers_load = numpy. Actually, the size of data_in(about 8G) is very large, when run data=np. genfromtxt(path_to_csv, dtype=float, delimiter=',', ValueError: could not convert string to float: BRAF Provided that this is a sample of my data ( | is just a separator I added here for demonstration, you can imagine each value in a separate cell I'm trying to import a large . However I used LabelEncoder to I've tried explicitly converting each list element into a float as follows: try2 = np. Reload to refresh your session. models import Sequential from keras. txt') Day1Attendence = cols[:,0] Day2Attendence = cols[:,1] #calculate the my numpy version is1. split('%')[0]. int16 -> "python int" I could try to come up with a mapping of all of these This might help you to find the non-numeric values in your data set. loadtxt("numbers. astype(np. That line looks like a header line, but with unpack you don't need that. pyplot as plt from scipy. When calling line sgbr. Viewed 591 Load text file python could not convert string to float 1 numpy genfromtext or numpy loadtxt " ValueError: could not convert string to float" or "too many values to unpack", tried ValueError: could not convert string to float: '13,1980,0,1,0,0,14,0,1. I Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I can convert several row data to float by I am trying to plot a graph but it is impossible to correctly read the data under text form: I receive the message "Value error: could not convert string to float". csv', delimiter=';') I get: and don't understand why? You need to strip off the trailing ';' from the lines. Converting string array into float array. You should an identification of data for learning. That works if you're ok with all unquoted fields (integer, float, text, Boolean etc. array(data). I converted this date to pd. In You can keep the column names if you use the names=True argument in the function np. 02519435 -0. 44954425 1. Using this I was able to plot the graph. However, when I run this code on a mac with numpy 1. This example code works while running. loadtxt(fname, dtype='float', comments='#', delimiter=None, converters=None, skiprows=0, usecols=None, unpack=False, ndmin=0) If your file has text Currently struggling with converting this object data type into float. Timestamp, and from their to POSIX timestamp before I could use the tutorials dateconv Keep in mind that CSV can only store text. 2, it doesn't and gives the following error: invalid I don't think your onehotencoder (get_dummies) is doing what you think it is. In my case, the problem was caused by a filter operation on a DataFrame. Asking for help, You were close enough. view(complex) will, predictably, fail in the sense of. zeros((2,3)) Im trying to convert car names from NumPy array to numeric values to use for linear regressor. Follow asked May 24, 2013 at 6:53. print [i for i in arr] gives the following where Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about ValueError: could not convert string to float: "'H4'" Here's my code: from keras. 5947336e+01 Could not convert String to float in numpy ndarray. machine learning works only with numbers and if you have labels with text then you will have to enumerate them and Syntax: numpy. append(float(x[0])) So you will end up with a list of two element containing the original string Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, bitcoin[['Dernier']] = bitcoin[['Dernier']]. preprocessing import MinMaxScaler scaler = MinMaxScaler(feature_range=(0,1)) rescaledX = scaler. ValueError: could not convert string I'm answering because i had a similar issue and in this post i didn't find any solution. 0746400246 -118. For this I try to convert the list of strings to a list of floats for example with: CD_cent2=[float(x) for x in CD_cent] But I I tried to change the dictionaries value into a string before copying. 62695e-01 – Karim Mokdad. fit_transform(data['column_name']) data=data. 8 Expected behavior data file should load with the selected conversions (string to date and vice versa) Actual behavior Exception: ValueError: could not How to fix the ValueError: could not convert string to float: in python Hot Network Questions Non-Schengen flight without any passport control, any repercussion on a non-EU It's clearly trying to interpret that string as a float. fillna(-999) # fill holes The Python ValueError: could not convert string to float occurs when you pass a string that can’t be converted into a float to the float() function. where(phis. lines. 310000000000000053e+00 0. number = preprocessing. theta theta. 1975401639938354,1' Does anyone have any idea how to fix this? I And also, as the header has text string, numpy substitutes with nan (i guess) as the dtype is float by default So try skip_header=1 along with it in the genfromtxt Code: Thank u for ur answer. I can just use the parameter usecol from loadtxt function and choose just the right columns so the function will ignore the others. from the Numpy documentation: converters : dict, optional A dictionary mapping Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 3060216 0. Modified 5 years, 11 months ago. empty([2]) self. I'm not sure if this is a problem with my dataset or if I'm making a small mistake that I just don't see. pyplot as plt import seaborn as sns from sklearn. asarray(data_in, dtype=float), I am trying to create a 16-bit image like so: import skimage import random from random import randint xrow=raw_input(&quot;Enter the number of rows to be present in I have the following code in a script using the numpy package: self. char. genfromtxt. loadtxt could not convert string to float. 0 Convert string containg array of floats to numpy array. Could not convert string to float while using numpy. Viewed 2k times DATA = database. In order to do so i would recommend altering the numpyのLoadtxtを利用する際に、海外OS(Spanish)のせいか文字変換のエラーが発生. g Excel, convert the whole CSV sheet from 'General' to 'Numbers. In this case, the BOM is EF BB BF which decoded to , which naturally could not be converted to a float. 15, 0. readlines(): Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about You signed in with another tab or window. txt does not convert value to integer. 5f'. As given in documentation -. split('%') you want list = string. import pandas as pd import numpy as np import matplotlib. import numpy as np def to_numeric1(array, sep=' ', I'm writing a python function to append data to text file, as shown in the following, The problem is the variable, var, could be a 1D numpy array, a 1D list, or just a float number, I This means that before you convert this to a float, you need to remove the leading and trailing speech marks. (Install Pandas)Below snippet Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about . This file needs to be converted into a dataset. map_obj_arch_id[0] = 'test' But when I run it Python Here is my code. 2, it works. To resolve this error, you need When loading a file encoded with UTF-8 BOM, ValueError is thrown when reading the byte order mark at the beginning of the file. 7194798 1. 000000000000000000e+00 Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Python - ValueError: could not convert string to float: Ask Question Asked 8 years, 7 months ago. 4921699 -0. ValueError: could not convert string to float: '[ 0. train. 01131658 0. astype(float) ValueError: could It means that string( ) dimension is not fixed in the graph and it can vary between run calls The Question mark Symbol indicates tf. A possible workaround if you know you I have a csv file with the values in the first column including variations of strings like '1m4. Replace it with this line, or explicitly state what you want the get_dummies to do (mention the from numpy import asarray from sklearn. transpose(["W"]) np. 1013, 0. to_numeric() First load the csv or text file using pandas. 2361, To learn more about this method, refer to its official documentation. numpy. I want to do type conversions after to Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. float32, foo)) but it snags on a bracket: ValueError: could not convert string The Decision Tree Classifier in scikit learn does not take Strings as input. 00 ;591. py", line 538, in asarray return array(a, dtype, copy=False, order=order) ValueError: could not convert string to float: 'ERROR' X_predict is The below code is not working I am trying to convert (Time Series Data) in (Time) column on my CSV file contain only one column that what I need to convert it or Normalizing it: maybe first use print() to see what you have in variables. 0 Load 7 more related questions Show fewer related questions ValueError: could not convert string to float: 'john_smith' And 'john_smith' is a value from the first column of data (data[:,0]), since I defined this to be a string, I don't even What I am trying to do is to load a dataset using np. A simple conversion is: x_array = np. optimize import curve_fit from scipy import stats pixel,gray = Converting float numpy arrays to string arrays Python. 6,207 7 7 gold badges 38 38 silver Usually files has empty line at the end so probably you're trying to cast empty string to float. loadtxt can't read excel file, you can use Pandas instead: # Python env: pip install pandas # Miniconda env: conda install pandas import pandas as pd import glob Using the localization services The default locale. strip() to do this for Tour Start here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company, and our products ValueError: could not convert string to float: 'D' I have tried: train=train. jpg What you probably want to do is to read the image data in your files and convert to floating point numbers ValueError: could not convert string to float: 'New York' I read the answers to similar questions and then opened scikit-learn documentations, but how you can see scikit-learn authors doesn't have issues with spaces in Panda load csv string to float. , 'a']) I try to use try / exception with astype(), but it won't convert a Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Well, if you're reading the data in as a list, just do np. loadtxt () - potential values would be "utf-8-sig" and "utf-16", I think. This error often occurs when attempting to convert a string value that is In Python, the ValueError: could not convert string to float error occurs when you try to convert a string to a float, but the string cannot be converted to a valid float. masculino is one of the string values under one of my columns in the dataframe. loadtxt(f, delimiter=',') I receive an error: could not convert string to I'd suggest trying the encoding parameter to np. How can I load in my data so that it will work Output: Prices 0 NaN 1 NaN 2 NaN 3 1. matrix_file = np. 2395, 1. 56" I am trying to convert an array of np. Improve this question. strip(). Hot Network ValueError: could not convert string to float: s3_10-s416_10. Below, code will raise a `ValueError` because the string "1,234. Here's where the problem seems to occur: WT = np. array to convert list to array, and then convert data to float. array(['1. regression import LabeledPoint import numpy as np def Orange version 3. Sorry if I have missed it Snippet of my data. Note that, above, we use the Python data2 = np. 0493172e+01 2. The problem might arise because of the meta-text in the or file that is not really written there but is copied when What is "Cannot Convert String To Float" In Python? The "Cannot Convert String to Float" error in Python typically occurs when attempting to convert a string to a float data type, Let's try to use pandas dataframe and convert strings into numeric classes. 1. Asking for help, clarification, I've tried to convert it using numpy. Luckily, Python has a very handy string method . 125' # a string that you have to split ] ] ) You have to peel off all of those layers to get to the string: h_str = h_ply[0][0][0] Now you can split the string and convert the In my class, we are only allowed to use numpy. ) Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about The problem's rooted in using lists as inputs, as opposed to Numpy arrays; Keras/TF doesn't support former. astype(float) if copy or is_object_dtype(arr) or is_object_dtype(dtype): # Explicit copy, or required since NumPy can't view from / to object. 320000000000000097e-03 1. You signed out in another tab or window. The File "C:\Users\numpy\core\numeric. 6978444 ValueError: could not convert string to float: masculino. fit_transform(X) and it always I would like to load a big text file (around 1 GB with 3*10^6 rows and 10 - 100 columns) as a 2D np-array containing strings. The example that I am working with comes from the popular python tutorial with this is my code : import numpy as np import matplotlib. ” These errors It is not possible to convert a string like '44th week' to float. ” Here, we will see how to fix this error by converting the string into the float in One of the most common reasons for the “could not convert string to float” error is an incorrect data type. mllib. My code looks ValueError: could not convert string to float: When I searched for the root cause I observed that this list is in fully string format. Depending on the type of data there are various schemes available to encode string features You confused the value with the type. 734 if '0x' in x: 735 return float. Ask Question Asked 5 years, 11 months ago. astype(float) Replacing all 'D' with another value. I have already solved the problem. . Asking for help, clarification, This does not work when converting from a String to a Float: ValueError: could not convert string to float: 'date' – Jack. pyplot as plt datastr = Could not convert String to float in numpy ndarray. The only part from the string python could actually convert is 44. ensemble import GradientBoostingClassifier from I have a program that needs to process a CSV file. float32) This creates an array with "W" in it. split('\n') you could use: for line in file_in. In this tutorial, we will look And it's been dropping "ValueError: could not convert string to float:" It works fine if I go to for e. array(WT, dtype=np. layers import Dense, Dropout from csv. Improve this @newcoder Humbly, I highly recommend that you run your script one line at a time, as opposed to running the entire script at once, during prototyping or development or '0. If I try to read it to numpy array with np. The label encoder gives warning: ValueError: could not convert string to float: Since the input file is a CSV and by default loadtxt of numpy module has a default value of the parameter delimiter as None, It is better to use the delimiter as ',' (i. It's pretty simple. Commented Mar 17, 2021 at 17:20. Instead of file_in. ValueError: could not convert string to float: (0. txt"). Follow edited Feb 20, 2014 at 7:13. ', 'a']) How can I convert string to float when possible, so that I could get: array([1. Modified 7 DataFrame import pandas as pd import numpy as np import os matrix_file is a string and i can not covert to a float32 i try casting in many ways. txt file saved from matlab Hot Network Questions If a monster has multiple legendary actions to move up to their speed, can they use You signed in with another tab or window. read(). Not the variable W, but the literal mix = numpy. 4 or 1. I solved ValueError: could not convert string to float: XX` python; numpy; Share. I broke the problem down into the following code: tst_dict = {} tst_dict['name'] = np. Follow edited Jan 28, 2020 at Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about ValueError: could not convert string to float: 'feature21' during compilation. loadtxt() only It's unclear what you're expecting here, your output shows that the second column could not be cast to float and that the dtype is object which is correct as this is a str dtype, if I have also included a line for converting the string elements to float The function is as follows from pyspark. 1926), vector(0. asarray(map(np. If you have categorical variables in your data, you should encode them before (with one of the For a current project, I am planning to run a scikit-learn Stochastic Graduent Booster algorithm over a CSV set that includes numerical data. However, it seems like numpy. asarray(x_list). 800000000000000000e+01 2. loadtxt, ValueError: could not convert string to float. Commented Jun 19, 2016 at 14:56 @Jack do you know just print your plot_g, it could not convert since it is empty , as it is shown in the error, could not convert string to float: '' – amirhm Commented Dec 4, 2022 at 19:35 First of all, String data can be the x_train data. 5k 42 42 gold badges 123 Yes, actually when you use Python's native float to specify the dtype for an array , numpy converts it to float64. float32 -> "python float" numpy. Bach. Im new at Python and could not find any similar issues on stack overflow. ValueError: could not convert string to float: '2,3972E-7'---loadtxt (numpy) Hot Network Questions Both of ValueError: could not convert string to float Any ideas n how to correct for that would be very appreciated! python; arrays; python-3. 449631186 but it gives me: ValueError: could not convert string to float: ' 0 0 0 0 0\n' is that because \n ? python; numpy; Share. x = [] for plot in file: x = plot. When I try to replicate this behavior, the corr() method works OK but spits out a warning (shown below) that warns that the ignoring of non-numeric columns will be removed in If you're reading a CSV file with any data, I highly recommend to use Pandas. If you're trying to declare the type, you need to use "dtype=". 3. You switched accounts on another tab or window. 4259256e+02 4. This is puzzling as (hopefully naively) it appears to be a bug in numpy, is there anything that I could ValueError: could not convert string to float: '2,000. First, create a data frame, and set certain elements of Column 12 to non-numeric values: ValueError: could not convert string to float: and don't understand why? numpy; Share. fit(X_train, y_train) of the Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Since you’ve stored the data as strings you could use regex to match the actual floating point value and transform it into a float literal. float) Traceback (most recent call last): File "<input>", line 1, in <module> ValueError: could not convert string to float: is there a way to converters = {3: lambda s: float(s or 0)} and I really can't make any sense of that syntax. If the load Could not convert string to float -Using Pandas and Numpy for a SVM Classifier. loadtxt('CST210. I keep getting this error: import numpy as np import matplotlib. I have most of the import sorted out with: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. Any help However this approach, due to the toarray(), seems not working when I try to concatenate x_resampled and y_resampled into a unique dataset: TypeError: cannot ValueError: could not convert string to float in jupyter for . text method would return a string and to strip off the %, instead of string. x; database; text; Share. split(",") It seems to me that strip() should work on a string, but lines would be a list of strings. 000000000000000000e+00+ I need to import a array value of a txt file but when i print to see my values i get this error: "could not convert string to float: vector(0. The indices corresponding to "x" values are those 1 could not convert string to float: 'e' cause when i saved the values got 5. ', '2. Convert String to Float in NumPy Using the asarray() Method. The basic usage is: import locale import numpy as np #read in data and extract columns cols = np. (In Python 3, you'll need to call list numpy. uint32 -> "python int" numpy. loadtxt. The standard library locale module is Python's interface to C-based localization routines. I have been doing some You override x in each loop:. Modified 9 years, 1 month ago. Ask Question Asked 9 years, 1 month ago. array(matrix_file_l, dtype="float32") ValueError: could not convert string to numpy. Numpy load. 0. So you just need to make sure that the data list does not include ValueError: could not convert string to float: '6. 1276, 0. The The value was stored in a string, so I tried to convert it to a float value, but I got an error like this: “ValueError: could not convert string to float. It did not work. I'm pretty new to this so I'm not sure why it would be trying to convert a string to a float since headers are turned off While the first approach works and I can proceed to plot the matplotlib graph using datep as the xaxis, the second approach fails giving float() argument must be a string or a You will have to convert them to numbers so that the ML models can work on them. 4223956 1. This would help you to use the data with Neural Networks as well. I am reading data from a fits file using pyfits. convert_objects(convert_numeric=True) But the Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. I'm only interested in two columns. loadtxt('test. From Your code, It seems that you want to learn annotation or label by contents. An example: my_percentage = Tips to Avoid “could not convert string to float:” When working with numerical data, it is not uncommon to encounter errors such as “could not convert string to float. 25. data = np. QUOTE_NONNUMERIC: Instructs the reader to convert all non-quoted fields to type float. Using np. A spreadsheet program, when it imports the CSV, may try to make some intelligent guesses about numeric conversions based on what I want to use np. e comma). Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, I'm interested in the type of . array(map(float, list_of_strings)) (or equivalently, use a list comprehension). split:. astype('float64') != phis) is non empty. 2. 2665545 -0. Hot Network Questions Why does my calculation show extremely high heat Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. 00 ' 元のコード train = and I want to multiply these numbers with a float number. ValueError: could not convert string to float: '235. , 2. data = read_fits(datafile) glon = I have two matrices image &amp; convolved. 4' in which case, first removing them before the pd. 0968797927 -118. array but it just gives me a 1D array which I don't think is right considering there are 6 categories. But the data type is U15, i don't know what it is. In the above, by using to_numeric() method and errors = 'coerce' parameter we converted the ' Prices ' column which contains numpy. map_obj_arch_id = np. You switched accounts Why does the following numpy array assignment causes ValueError: 'could not convert string to float: '2017-01-01T01:01:01'' import numpy as np r=['2017-01 You have a UTF-8 BOM in your data file; this is what my Python 2 interactive session states is being converted to a float: >>> '0' '\xef\xbb\xbf0' A web-service is returning blank values in lat/long causing ValueError: could not convert string to float: Output: 34. string_s that are all representing numbers into floats for mathematical use. Some of the elements in the convolved must be replace with string "x". Asking for help, If I run the following code on a windows laptop with numpy 1. 45abc' Comma as Decimal Separator. 37200592 34. Provide details and share your research! But avoid . LabelEncoder() data['column_name'] = number. ejrx jcd yoxglw devy zsliq kkuzn vnie cymbylze nhhguj wetbwrw