◆ MATLAB

Manipulate time series data

This is real work, not a feature someone invented — it comes from real job ads and real questions people asked. Below are four ready AI prompts: get it done, make it easy for the next person to say yes to, work out the right move when you are stuck, and stop it coming back.

4prompts

The same task, four prompts

today's deadline · the next reviewer · the stuck moment · the pattern
AExecute — do the immediate taskLoad the 'stock_prices_2023.csv' file, extract the 'AAPL' stock data, and then calculate the…+
Load the 'stock_prices_2023.csv' file, extract the 'AAPL' stock data, and then calculate the 7-day moving average of its closing price. Display the first 10 values of this moving average.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
BImprove — make it easier to acceptBefore I present this stock analysis to the trading team, make sure the time series…+
Before I present this stock analysis to the trading team, make sure the time series manipulation is robust. Smooth out any sudden, single-day spikes or drops in the 'GOOG' closing price that look like data entry errors, and ensure the weekly returns are annualized correctly for our internal comparison metrics.
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
CDecide — diagnose the stuck momentI'm trying to compare the 'Pressure' data from Sensor A, recorded every 10 seconds, with…+
I'm trying to compare two sensor readings, but they were recorded at different intervals, making direct comparison impossible without interpolation.
I'm trying to compare the 'Pressure' data from Sensor A, recorded every 10 seconds, with 'Flow_Rate' from Sensor B, recorded every 30 seconds. The project manager wants to see their correlation. If I just align them by timestamp, I lose data or get misaligned points. How should I best resample or interpolate one of the series so they can be accurately compared without introducing false trends?
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?
DBecome — change the patternI keep hitting roadblocks when combining different time series for analysis. Each dataset comes…+
I constantly waste time manually aligning and cleaning disparate time series data, delaying insights for my research.
I keep hitting roadblocks when combining different time series for analysis. Each dataset comes with its own sampling rate, missing values, or inconsistent timestamps, and I spend hours manually re-aligning them. What habit can I change to streamline the process of preparing and synchronizing diverse time series data, so I can focus on the actual analysis for my thesis advisor?
when the reply comes backPush once: ask it to sharpen the weakest part, and to say what it assumed. Helpful?

Questions people actually ask

honest answers, no sign-up

Every task here was seen in the real world. Someone doing the job named it, a real job ad asked for it, or a lot of people asked about it online.

If nothing real showed a task, it is not on the page. That is the whole rule.

They are the same job approached four ways, because what you need depends on where you are.

Get it done today. Make it easy for the next person to say yes to. Work out the right move when you are stuck. Learn the pattern so the job stops coming back.

For most of these jobs it can carry the heavy thinking - draft it, sort it, check it, rehearse it with you.

It cannot sit in your chair, take the blame when a number is wrong, or notice what nobody wrote down. Let it do the first 80%. Keep the last 20% that is truly yours.

No. Copy any prompt and paste it into the AI you already use. No account, no score, no wall in the way.

Any of them. The prompts describe the work rather than naming a product, so they are not tied to one assistant.

That is also why they keep working when you switch.

Change it freely. Every prompt is a starting line, not a rule.

Put in your real numbers, your real names and your real deadline. The more you make it yours, the better the answer comes back.

The tasks come from real job ads, published job data and the questions people ask in public forums.

The steps come from MATLAB's own documentation, with practitioner sources for the traps the manual does not mention.

Push once. Ask it to sharpen the weakest part and to say what it assumed.

Most wrong answers come from a missing detail rather than a bad prompt - tell it the thing it could not know.