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--- | ||
Title: '.funnel()' | ||
Description: 'Generates a funnel chart that visualizes the reduction of data in progressive stages.' | ||
Subjects: | ||
- 'Computer Science' | ||
- 'Data Science' | ||
Tags: | ||
- 'Data' | ||
- 'Graphs' | ||
- 'Libraries' | ||
- 'Methods' | ||
- 'Plotly' | ||
CatalogContent: | ||
- 'learn-python-3' | ||
- 'paths/computer-science' | ||
--- | ||
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The **`.funnel()`** method in Plotly Express creates a funnel chart, which visualizes the progressive reduction of data as it moves through sequential stages. The chart is composed of stacked horizontal bars, with each bar's length representing a value at a specific stage. This helps highlight changes, bottlenecks, or drop-offs in the process. | ||
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## Syntax | ||
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```pseudo | ||
plotly.express.funnel(data_frame=None, x=None, y=None, color=None, facet_row=None, facet_col=None, ...) | ||
``` | ||
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- `data_frame`: The dataset (typically a [Pandas DataFrame](https://www.codecademy.com/resources/docs/pandas/dataframe)) to be plotted. If this is not provided, Plotly Express will construct a DataFrame using the other arguments. | ||
- `x`: The column in the DataFrame that specifies the values to determine the length of the bars, plotted along the x-axis. | ||
- `y`: The column in the DataFrame that represents the stages of the funnel, plotted along the y-axis. | ||
- `color`: The column in the DataFrame that assigns colors to the bars of the funnel. | ||
- `facet_row`: Splits the funnel chart into vertically-stacked subplots based on a specified column from the DataFrame. | ||
- `facet_col`: Splits the funnel chart into horizontally-arranged subplots based on a specified column from the DataFrame. | ||
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> **Note:** The ellipsis (...) indicates there can be additional optional parameters beyond those listed here. | ||
## Example 1 | ||
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The example below generates a funnel chart representing the job search process for an applicant: | ||
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```py | ||
import plotly.express as px | ||
import pandas as pd | ||
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# Create sample dictionary | ||
data = { | ||
'Stage': ['Applications Sent', 'Phone Interview', 'Technical Interview', 'Onsite Interview', 'Offers Received', 'Offers Accepted'], | ||
'Job Applications': [500, 348, 92, 56, 10, 1] | ||
} | ||
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# Convert the dictionary into a DataFrame | ||
df = pd.DataFrame(data) | ||
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# Create the funnel chart with title "Job Search" | ||
fig = px.funnel(df, x='Job Applications', y='Stage', title='Job Search') | ||
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# Show the chart | ||
fig.show() | ||
``` | ||
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The above example produces the following output: | ||
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![Funnel Chart Illustrating Job Search](https://raw.githubusercontent.com/Codecademy/docs/main/media/plotly-express-funnel-example1.png) | ||
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## Example 2 | ||
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As a variation of the previous example, this example adds subplots using the `facet_col` parameter to compare two different job applicants side by side: | ||
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```py | ||
import plotly.express as px | ||
import pandas as pd | ||
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# Create sample dictionary | ||
data = { | ||
'Stage': ['Applications Sent', 'Phone Interview', 'Technical Interview', 'Onsite Interview', 'Offers Received', 'Offers Accepted'] * 2, | ||
'Job Applications': [500, 348, 92, 56, 10, 1, 500, 329, 290, 225, 167, 1], | ||
'Applicants': ['Candidate 1'] * 6 + ['Candidate 2'] * 6 | ||
} | ||
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# Convert the dictionary into a DataFrame | ||
df = pd.DataFrame(data) | ||
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# Create the funnel chart with title "Job Search Comparison" | ||
fig = px.funnel(df, x='Job Applications', y='Stage', facet_col='Applicants', title='Job Search Comparison') | ||
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# Show the chart | ||
fig.show() | ||
``` | ||
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The above code will result in the following output: | ||
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![Funnel Chart Comparing Two Applicants](https://raw.githubusercontent.com/Codecademy/docs/main/media/plotly-express-funnel-example2.png) |
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content/pytorch/concepts/tensors/terms/linspace/linspace.md
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--- | ||
Title: '.linspace()' | ||
Description: 'Returns a one-dimensional tensor with a specified number of evenly spaced values between the given start and end points.' | ||
Subjects: | ||
- 'Data Science' | ||
- 'Machine Learning' | ||
Tags: | ||
- 'AI' | ||
- 'Data Types' | ||
- 'Deep Learning' | ||
- 'Functions' | ||
CatalogContent: | ||
- 'intro-to-py-torch-and-neural-networks' | ||
- 'py-torch-for-classification' | ||
--- | ||
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The **`.linspace()`** function in PyTorch is used to return a one-dimensional tensor with a specified number of evenly spaced values between the given start and end points. | ||
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## Syntax | ||
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```pseudo | ||
torch.linspace(start, end, steps) | ||
``` | ||
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- `start`: The starting value to be used. | ||
- `end`: The ending value to be used. | ||
- `steps`: The number of steps to be taken between the starting and ending values. | ||
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This function is particularly useful when there is a need to create a tensor of equally spaced points for plotting graphs or for performing other numerical computations. | ||
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## Example | ||
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The following example shows how to use the `.linspace()` function in PyTorch: | ||
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```py | ||
import torch | ||
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# Create a tensor of 5 equally spaced points between 0 and 1 | ||
x = torch.linspace(0, 1, 5) | ||
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print(x) | ||
``` | ||
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The code above generates the following output: | ||
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```shell | ||
tensor([0.0000, 0.2500, 0.5000, 0.7500, 1.0000]) | ||
``` |
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