Clamp a Matrix
Set an allowed range for matrix values. Runs entirely in your browser, so your data never leaves your device.
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Output
The result appears here as you type.
How to use Clamp a Matrix
- 1. Paste your matrix. Enter a matrix in the input pane, one row per line, with numbers you want restricted to a fixed range before further use.
- 2. Set the minimum and maximum. Enter values for Minimum value and Maximum value. Any element below the minimum is raised to it, and any element above the maximum is lowered to it.
- 3. Set the element separator. Use Element separator to match how numbers within each row are divided, such as a space or comma, so the tool parses your rows correctly.
- 4. Copy the clamped matrix. Copy the output matrix, where every value now falls within your chosen range, into your spreadsheet, script or write-up.
When to use Clamp a Matrix
Clamp a Matrix restricts every element of a matrix to a minimum and maximum value, pushing out-of-range numbers to the nearest boundary. It is useful whenever a matrix feeds into a process that expects bounded values.
- Preparing pixel or color data. A matrix representing image channel values has entries outside the valid 0 to 255 range after an arithmetic operation, and clamping brings every cell back into a displayable range.
- Bounding a simulation state matrix. A physics or grid simulation accumulates values that occasionally exceed physically sensible limits, and clamping the state matrix each step keeps the simulation numerically stable.
- Sanitizing an imported dataset. A spreadsheet of sensor readings imported as a matrix has a few impossible outliers from a faulty reading, and clamping to expected min and max limits contains the damage.
- Normalizing weights before display. A matrix of computed weights needs to fit within a fixed display range for a heatmap or table, and clamping it to 0 through 10 makes the output presentable.
Examples
Clamp all values into [0, 10]
Input
-5 3 99 12 7 -1
Output
0 3 10 10 7 0
A tighter range of [2, 4]
Input
1 2 3 4 5 6
Output
2 2 3 4 4 4
About the Clamp a Matrix tool
Clamp a Matrix does its work locally, right in the browser. Set an allowed range for matrix values. There is no upload step, no queue and no account, and your data never travels over the network.
It belongs to the Math Tools collection on EditSafely, a set of 234 small, focused Math utilities that share the same instant, private workspace.
You can shape the output with 3 settings, including Minimum value, Maximum value and Element separator, and the result refreshes the moment you change one. 2 worked examples further down the page show exactly what the tool produces for real inputs.
Running locally also makes the tool fast and dependable: results appear as you type or drop a file, there is no server outage that can take it down mid-task, and confidential data can be processed without a second thought.
Frequently asked questions
Does Clamp a Matrix cost anything?
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?
No data leaves your device. The whole tool is JavaScript that runs inside your browser tab, so there is no upload, no server-side processing and no log of what you did. If you disconnect from the internet after the page loads, it keeps working.
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?
Nothing to install and no account needed. Open the page in any up-to-date browser, including on a phone or tablet, and the tool is ready.
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.