Truncate a Vector
Delete components. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Truncate a Vector
- 1. Paste your vectors. Enter one vector per line, for example (1, 2, 3, 4, 5). Vectors shorter than your keep count are left unchanged rather than padded.
- 2. Set how many components to keep. Choose Keep first, the number of leading components each vector retains before the remainder is dropped from the end.
- 3. Choose the wrap style. Pick Parentheses, Brackets, or None for how the shortened vector is displayed, matching the notation used elsewhere in your document.
- 4. Copy the truncated vectors. The output pane shows each vector cut down to your chosen length. Copy it into your calculation, dataset, or downstream tool.
When to use Truncate a Vector
Truncate a Vector deletes trailing components from one or more vectors, keeping only the first however many you specify. Use it whenever a vector has extra dimensions you need to drop for a lower-dimensional calculation or a fixed-width input.
- Reducing high-dimensional data for a demo. You have feature vectors with many dimensions from a data pipeline and want a shorter version showing only the first few components for a quick illustrative example or slide.
- Fitting a vector into a fixed-width input field. A downstream tool or form only accepts vectors up to a certain length, and truncating your data to the first three or four components makes it fit that constraint.
- Projecting a 3D vector down to 2D. You have 3D coordinate vectors and want just the x and y components for a 2D visualization, and keeping the first two components drops the z axis in one step.
- Testing a function's handling of shortened input. You are checking how a vector-processing function behaves when given fewer dimensions than expected, and truncating existing test vectors here quickly produces that shorter input.
Examples
One vector per line, keeping the first 3 components
Input
(1, 2, 3, 4, 5) (9, 8)
Output
(1, 2, 3) (9, 8)
About the Truncate a Vector tool
Truncate a Vector is a free online tool that works entirely inside your web browser. Delete components. Because the processing happens on your own device, nothing you enter is uploaded, logged or stored anywhere.
This page is one of 234 Math utilities on EditSafely. Each one does a single job well, and all of them follow the same rule: your input stays on your machine.
You can shape the output with 2 settings, including Keep first and Wrap, and the result refreshes the moment you change one. A worked example further down the page shows exactly what the tool produces for a real input.
Because nothing leaves your device, the tool is suitable for sensitive content such as internal documents, credentials or customer data. It also responds instantly, since every keystroke is handled on your own machine rather than by a remote API.
Frequently asked questions
Is Truncate a Vector free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.