How Can I make Probability density function plot in matlab for this data when i trying any command they get error

How Can I make Probability density function plot in MATLAB for this data which in a matrix when I trying any command they get error "DATA must be a vector"

here is my data

17.7736000000000  39.1103000000000
17.7736000000000  39.1783000000000
17.7540000000000  39.1103000000000
17.7540000000000  39.1443000000000
17.7540000000000  39.1103000000000
17.7246000000000  39.1103000000000
17.7344000000000  39.1443000000000
17.7148000000000  39.1443000000000
17.7148000000000  39.1443000000000
17.7148000000000  39.1443000000000
17.7148000000000  39.2123000000000
17.6952000000000  39.2463000000000
17.6952000000000  39.2123000000000
17.6854000000000  39.2123000000000
17.7050000000000  39.1783000000000
17.6952000000000  39.1783000000000
17.6952000000000  39.1783000000000
17.6952000000000  39.1443000000000
17.6952000000000  39.1443000000000
17.6854000000000  39.1443000000000
17.6854000000000  39.0763000000000
17.6560000000000  39.2123000000000
17.6560000000000  39.2123000000000
17.6560000000000  39.2123000000000
17.6658000000000  39.2123000000000
17.6756000000000  39.2123000000000
17.6756000000000  39.2123000000000
17.6756000000000  39.1783000000000
17.6658000000000  39.2123000000000
17.6756000000000  39.1443000000000
17.6658000000000  39.2123000000000
17.6560000000000  39.2803000000000
17.6560000000000  39.2123000000000
17.7932000000000  38.8379000000000
17.8324000000000  38.7698000000000
17.8324000000000  38.7357000000000
17.8520000000000  38.7357000000000
17.8618000000000  38.7357000000000
17.8520000000000  38.7357000000000
17.8618000000000  38.7698000000000
17.8912000000000  38.6675000000000
17.9010000000000  38.6675000000000
17.9500000000000  38.6334000000000
17.9500000000000  38.5993000000000
17.9500000000000  38.6675000000000
17.9500000000000  38.5993000000000
17.9598000000000  38.6675000000000
17.9696000000000  38.6334000000000
17.9892000000000  38.5993000000000
18.0186000000000  38.5311000000000
18.0284000000000  38.5652000000000
18.0284000000000  38.5311000000000
18.0578000000000  38.5311000000000
18.1558000000000  38.3946000000000
18.1656000000000  38.3263000000000
18.3224000000000  38.1897000000000
18.3812000000000  38.0529000000000
18.4988000000000  37.9161000000000
18.5772000000000  37.7792000000000
18.5968000000000  37.8477000000000
18.6360000000000  37.7107000000000
18.7732000000000  37.5394000000000
18.8516000000000  37.4022000000000
18.8614000000000  37.3336000000000
18.8908000000000  37.2993000000000
18.9202000000000  37.2993000000000
18.9300000000000  37.2307000000000
18.9496000000000  37.1620000000000
18.9594000000000  37.2307000000000
19.1652000000000  36.7839000000000
19.1848000000000  36.7495000000000
19.2142000000000  36.7151000000000
19.2436000000000  36.6118000000000
19.2730000000000  36.5430000000000
19.3220000000000  36.4741000000000
19.3906000000000  36.4052000000000
19.4396000000000  36.2673000000000
19.4494000000000  36.3018000000000
19.5376000000000  36.1983000000000
19.5474000000000  36.1293000000000
19.5964000000000  36.0603000000000
19.6650000000000  35.9221000000000
19.7630000000000  35.7839000000000
19.7728000000000  35.6802000000000
19.7826000000000  35.7148000000000
19.9296000000000  35.5764000000000
20.0178000000000  35.3687000000000
20.0276000000000  35.2995000000000
20.0472000000000  35.2648000000000
20.2530000000000  34.8834000000000
20.2824000000000  34.8834000000000
20.5176000000000  34.5360000000000
20.5960000000000  34.3969000000000
20.6058000000000  34.3273000000000
20.7136000000000  34.1880000000000
20.7136000000000  34.1880000000000
20.7626000000000  34.1184000000000
20.8312000000000  34.0139000000000
20.8900000000000  33.9093000000000
20.9880000000000  33.8047000000000
21.2134000000000  33.4206000000000
21.2428000000000  33.4206000000000
21.2820000000000  33.3507000000000
21.3114000000000  33.3158000000000
21.3114000000000  33.2808000000000
21.3212000000000  33.2808000000000
21.3212000000000  33.2458000000000
21.3408000000000  33.3507000000000
21.3702000000000  33.2808000000000
21.3996000000000  33.2808000000000
21.4388000000000  33.2108000000000
21.4878000000000  33.0709000000000
21.5172000000000  33.0709000000000
21.5074000000000  33.0009000000000
21.5270000000000  33.0359000000000
21.5368000000000  33.0009000000000
21.6544000000000  32.8608000000000
21.6740000000000  32.8958000000000
21.7132000000000  32.8608000000000
21.7916000000000  32.8257000000000
21.8112000000000  32.7557000000000
21.8112000000000  32.6855000000000
21.8896000000000  32.5803000000000
21.8896000000000  32.5452000000000
21.9484000000000  32.5102000000000
22.0170000000000  32.4400000000000
22.0366000000000  32.4049000000000
22.0660000000000  32.3698000000000
22.0856000000000  32.3346000000000
22.1150000000000  32.2995000000000
22.0954000000000  32.4049000000000
22.0856000000000  32.4400000000000
22.0954000000000  32.4049000000000
22.1346000000000  32.3698000000000
22.1934000000000  32.3346000000000
22.2228000000000  32.2644000000000
22.2424000000000  32.2293000000000
22.3012000000000  32.1941000000000
22.3600000000000  32.0887000000000
22.4580000000000  31.9480000000000
22.4972000000000  31.9480000000000
22.5168000000000  31.8776000000000
22.4874000000000  32.0183000000000
22.5952000000000  31.8072000000000
22.6638000000000  31.8072000000000
22.6834000000000  31.7368000000000
22.6344000000000  31.9480000000000
22.6442000000000  31.8072000000000
22.7128000000000  31.7368000000000
22.7324000000000  31.6664000000000
22.7618000000000  31.5959000000000
22.7520000000000  31.6312000000000
22.7324000000000  31.6664000000000
22.7520000000000  31.7368000000000
22.7912000000000  31.6664000000000
22.7716000000000  31.7368000000000
22.8108000000000  31.7016000000000
22.8304000000000  31.6312000000000
22.8794000000000  31.5254000000000
22.8892000000000  31.5254000000000
22.9872000000000  31.3844000000000
23.0068000000000  31.4197000000000
23.0264000000000  31.4549000000000
23.0558000000000  31.3139000000000

[the cyclist]

Tell us more about your data. Are the two columns, with (x,y) pairs?

What do you want the output to be? A histogram with dimensions for (x,y) and z = frequency? Or do you want some kind of fit to a continuous curve.

Don't make us guess at what you want!

Answer 1

[the cyclist]

The hist3 command makes bivariate histograms. (That command is part of the Statistics and Machine Learning Toolbox.) Your data are an Nx2 matrix, so it is as simple as

figure
hist3(data)

The figure I got:

You can adjust input parameter to get more bins, etc.