Data Matrix is a data collection mode in LabQuest
Data Matrix is a data collection mode in LabQuest

that was specifically designed for doing fieldwork.
that was specifically designed for doing fieldwork.

Typically for data collection,
Typically for data collection,

you would collect one thing,
you would collect one thing,

such as temperature over time.
such as temperature over time.

But in fieldwork, not only do you want
But in fieldwork, not only do you want

to collect data versus time,
to collect data versus time,

but you'll want to do that over different days.
but you'll want to do that over different days.

So you have two parameters
So you have two parameters

against which you're collecting data.
against which you're collecting data.

So you can do that in Data Matrix,
So you can do that in Data Matrix,

and I'm going to plug in a temperature probe
and I'm going to plug in a temperature probe

and a conductivity probe.
and a conductivity probe.

Notice how they are auto-IDing,
Notice how they are auto-IDing,

showing the live readouts,
showing the live readouts,

and we're going to be putting them into a stream
and we're going to be putting them into a stream

at two different places today.
at two different places today.

So turning this into Data Matrix mode,
So turning this into Data Matrix mode,

I tap on Mode and then choose Data Matrix
I tap on Mode and then choose Data Matrix

from the list of different modes.
from the list of different modes.

It brings us to this screen,
It brings us to this screen,

where you're asked to choose
where you're asked to choose

what your rows and runs are going to be.
what your rows and runs are going to be.

And typically you would put a different site
And typically you would put a different site

and a different day
and a different day

when you're collecting data out in the field.
when you're collecting data out in the field.

So you can change these if you want,
So you can change these if you want,

but I'm going to leave them Site and Day for now.
but I'm going to leave them Site and Day for now.

Also notice the checked "automatically increment number" box.
Also notice the checked "automatically increment number" box.

This is just going to number our sites 1, 2, 3
This is just going to number our sites 1, 2, 3

and our days 1, 2, 3.
and our days 1, 2, 3.

And again, you can customize that if you want.
And again, you can customize that if you want.

So we're going to move on by tapping the OK button.
So we're going to move on by tapping the OK button.

And notice that the mode has now changed to Data Matrix.
And notice that the mode has now changed to Data Matrix.

So let's start data collection
So let's start data collection

by tapping the button in the lower left.
by tapping the button in the lower left.

This screen has you identify which day and which site
This screen has you identify which day and which site

you want to start with, so that's correct,
you want to start with, so that's correct,

Day 1 and Site 1.
Day 1 and Site 1.

I'm going to Continue.
I'm going to Continue.

And this is your screen
And this is your screen

where you're going to actually take the data values.
where you're going to actually take the data values.

I'm going to put my temperature probe
I'm going to put my temperature probe

into my stream at Site 1.
into my stream at Site 1.

Wait for that to equilibrate.
Wait for that to equilibrate.

Also notice there's an unlocked padlock
Also notice there's an unlocked padlock

on the red square.
on the red square.

And I'm going to tap this now
And I'm going to tap this now

anywhere in the red square,
anywhere in the red square,

and it turns that white and locks the padlock.
and it turns that white and locks the padlock.

So that has grabbed that number.
So that has grabbed that number.

If I've made a mistake,
If I've made a mistake,

I can tap it again and unlock it.
I can tap it again and unlock it.

Let me show you that.
Let me show you that.

Unlocked and lock -- I can just toggle back and forth.
Unlocked and lock -- I can just toggle back and forth.

All right, I have saved my temperature value.
All right, I have saved my temperature value.

Now I'll put in the conductivity probe.
Now I'll put in the conductivity probe.

So this is looking at total dissolved solids.
So this is looking at total dissolved solids.

Pretty low in this sample.
Pretty low in this sample.

Once that's pretty stable,
Once that's pretty stable,

I'll tap that and it's locked.
I'll tap that and it's locked.

All right, so now we're ready
All right, so now we're ready

to change to a different site.
to change to a different site.

I tap the Change button...
I tap the Change button...

and I'm going to move on down the stream to Site 2.
and I'm going to move on down the stream to Site 2.

So I tap the Add Site button.
So I tap the Add Site button.

Now we're at Site 2, still on Day 1, and Continue.
Now we're at Site 2, still on Day 1, and Continue.

I'm going to move my temperature probe to the Site 2.
I'm going to move my temperature probe to the Site 2.

It's cooler here.
It's cooler here.

OK, I'm going to go ahead and grab that value.
OK, I'm going to go ahead and grab that value.

And then the conductivity
And then the conductivity

for Site 2 is much higher.
for Site 2 is much higher.

So we must be going into some brackish water here.
So we must be going into some brackish water here.

All right, that's pretty stable, and we'll grab that.
All right, that's pretty stable, and we'll grab that.

OK, now we're going to Change,
OK, now we're going to Change,

and we are ready to move on to Day 2.
and we are ready to move on to Day 2.

So I've closed everything up, gone home for the day,
So I've closed everything up, gone home for the day,

heading to Day 2, so I'm going to add a day,
heading to Day 2, so I'm going to add a day,

tap that button.
tap that button.

Day 2: I start again at Site 1,
Day 2: I start again at Site 1,

so I'm going to change this back to Site 1.
so I'm going to change this back to Site 1.

So Day 2, Site 1, Continue.
So Day 2, Site 1, Continue.

Now I'll go back,
Now I'll go back,

put my temperature probe in Site 1...
put my temperature probe in Site 1...

Grab that data.
Grab that data.

Conductivity probe into Site 1.
Conductivity probe into Site 1.

Grab that data.
Grab that data.

OK, I made a mistake.
OK, I made a mistake.

I didn't grab that data.
I didn't grab that data.

If I go back and Continue, you can see it kept it.
If I go back and Continue, you can see it kept it.

Temperature was saved, but conductivity wasn't.
Temperature was saved, but conductivity wasn't.

So I'll tap conductivity, now it's saved.
So I'll tap conductivity, now it's saved.

You can just keep on going.
You can just keep on going.

I Change, I want to go to Site 2 now on Day 2.
I Change, I want to go to Site 2 now on Day 2.

I already have it, so I choose it from the list
I already have it, so I choose it from the list

instead of adding another one.
instead of adding another one.

Day 2, Site 2, and I continue on to collect the data.
Day 2, Site 2, and I continue on to collect the data.

Moving back to temperature in Site 2.
Moving back to temperature in Site 2.

Got that.
Got that.

And finally, conductivity in Site 2.
And finally, conductivity in Site 2.

And grab it.
And grab it.

All right, I'm done, so I tap
All right, I'm done, so I tap

the Stop Data Collection button.
the Stop Data Collection button.

And now we can go to the data table by going to that tab,
And now we can go to the data table by going to that tab,

and notice I have my two data sets,
and notice I have my two data sets,

Day 1 and Day 2.
Day 1 and Day 2.

Each one has two sites
Each one has two sites

with a temperature and conductivity all filled in.
with a temperature and conductivity all filled in.

To look at that graph, I'll go to the Graph tab,
To look at that graph, I'll go to the Graph tab,

and there they are with the sites on the X axis
and there they are with the sites on the X axis

and Day 2 -- if you see in the upper right there
and Day 2 -- if you see in the upper right there

next to the filing cabinet, it says Day 2.
next to the filing cabinet, it says Day 2.

That means I'm currently looking at Day 2.
That means I'm currently looking at Day 2.

There's a graph for temperature, a graph for conductivity.
There's a graph for temperature, a graph for conductivity.

I can choose Day 1 instead -- there it is --
I can choose Day 1 instead -- there it is --

or I can go to All Days
or I can go to All Days

and see them graphed on top of each other.
and see them graphed on top of each other.

Now, I'm looking at a particular day or days
Now, I'm looking at a particular day or days

at various sites.
at various sites.

But what if I want to flip that around
But what if I want to flip that around

and look at various days at each site?
and look at various days at each site?

There's a feature called Pivot the Data
There's a feature called Pivot the Data

under Analyze, Advanced, Pivot Data.
under Analyze, Advanced, Pivot Data.

And now instead of the site being on the X axis,
And now instead of the site being on the X axis,

the day is on the X axis.
the day is on the X axis.

And I can plot Site 1, Site 2, or All Sites.
And I can plot Site 1, Site 2, or All Sites.

For this look at Data Matrix,
For this look at Data Matrix,

I was only using two sensors,
I was only using two sensors,

but you can use three, because there are three ports.
but you can use three, because there are three ports.

But the beauty of Data Matrix
But the beauty of Data Matrix

is that you can also use more than that
is that you can also use more than that

because you can plug and unplug
because you can plug and unplug

any time you want during data collection.
any time you want during data collection.

So you can have virtually an unlimited number of sensors
So you can have virtually an unlimited number of sensors

you can continue to plug and unplug.
you can continue to plug and unplug.

Another nice thing about LabQuest 2
Another nice thing about LabQuest 2

is that it has built-in GPS.
is that it has built-in GPS.

So if you enable that,
So if you enable that,

you can get latitude and longitude
you can get latitude and longitude

while you're collecting these data.
while you're collecting these data.

There will be columns
There will be columns

specifically for latitude and longitude
specifically for latitude and longitude

so that if you choose to import this data into Logger Pro,
so that if you choose to import this data into Logger Pro,

you can use the File Export to Google Maps feature
you can use the File Export to Google Maps feature

and map your data very quickly and easily.
and map your data very quickly and easily.