Boxplot for matrix doesn't work

Hi guys and thanks in advance. I have been trying to create boxplot for a matrix that is created after the result of series of computation. As a sample run one of the matrix produced is as follow:

x =
 
[ 42.469195622846338711640631618479*exp(-225179981368524800/835346479735089097) + 481/100, 37.183422210138560512684153123466, 37.122797425572113279325938731753, 37.062351482438396131005350619172, 37.002083850040617604695155908958, 36.941993999255225357307078133611, 36.882081402527244483642868820696, 36.822345533865629641055987457153, 36.762785868838630939948830717551, 36.703401884569173559351417670882, 36.644193059730251046948045646262, 36.585158874540332263038682598504, 36.526298810758781928041757225296, 36.467612351681294733264548800725, 36.409098982135342974786565754096, 36.350758188475637670420136484411]
[ 42.022285183570413073452941101102*exp(-225179981368524800/835346479735089097) + 481/100, 36.854146969242192284927979031943, 36.805495556515071899751159813264,  36.75696106492542081747795604442, 36.708543211498506675703078546152,  36.66024171394354283824935736958, 36.612056290652036258892124453157, 36.563986660696139333638904074057, 36.516032543827005731940262005205, 36.468193660473150197230876015703, 36.420469731738812307223046119814,  36.37286047940232418439796292286, 36.325365625914482147163096665882, 36.277984894396922292167058268897,  36.23071800864049999828621694894, 36.183564693103673342820236977422]
[ 41.585971232478406233216593770993*exp(-225179981368524800/835346479735089097) + 481/100, 36.527007024468721145096254899741, 36.484407868681842279365758770351, 36.441899804216430376713705066347,  36.39948263475306884647442299668, 36.357156164394777033245179680855, 36.314920197666101813081849561592, 36.272774539512211141818138886474, 36.230718995297989551315745457748, 36.188753370807135589461833770461,  36.14687747224126119973918626978, 36.105091106218993036203352800056, 36.063394079775075709710062432267, 36.021786200359476961245084784169, 35.980267275836494758217631729959, 35.938837114483866309587275074522]
[ 41.159862613106382786104519250463*exp(-225179981368524800/835346479735089097) + 481/100, 36.205623132140523709593421251411, 36.167049061296905771042302818667,  36.12855091869169627337112500036, 36.090128553588246505455571856252, 36.051781815548622310069345299871, 36.013510554433012531414283435813, 35.975314620399138633263435416669, 35.937193863901665485402028253096, 35.899148135691613316055836848723, 35.861177286815770828001035329877, 35.823281168616109476054165516425, 35.785459632729198903645407152043, 35.747712531085623536182874297895,  35.71003971590940032892019311064, 35.672441039717397667044138091653]
[ 40.743587986345479644326525426544*exp(-225179981368524800/835346479735089097) + 481/100, 35.890705719127258031473668142554, 35.855117840387132316619693595186, 35.819595673619932197662859850297, 35.784139096374893162544986223624, 35.748747986428981877318296704885, 35.713422221786472965393236115152, 35.678161680678526572695490693237, 35.642966241562766717273762841246, 35.607835783122860421902554682676, 35.572770184268097628226914995547, 35.537769324132971890998798987387, 35.502833082076761850957380287698, 35.467961337683113484908339456104, 35.433153970759623131559833249875, 35.398410861337421291675523872254]
[ 40.336794549086635265801732806091*exp(-225179981368524800/835346479735089097) + 481/100, 35.582393312112062595095737745864, 35.549158527692838463569467025324, 35.515982022564958052408373299598, 35.482863693533621975613803430529, 35.449803437586368070236849280654, 35.416801151892749464430416852086, 35.383856733804013213431492929928, 35.350970080852779502472395830375, 35.318141090752721415621560823371, 35.285369661398245269556171663238, 35.252655690864171511270707423636, 35.219999077405416178727228500905, 35.187399719456672923454977227788, 35.154857515632095594108617033156, 35.122372364724981379996179498105]
[ 39.939146853646444231712708041937*exp(-225179981368524800/835346479735089097) + 481/100, 35.280637941941589484586267833191, 35.249330333523724814257568209732, 35.218075322262479096814110018469, 35.186872818882602552969872892604, 35.155722734260030825082470920272, 35.124624979421629147758082978667, 35.093579465544936950986990892249, 35.062586103957912895078968108591, 35.031644806138680336668995408131, 35.000755483715273225065011904706, 34.969918048465382428210639255923, 34.939132412316102487537044589471, 34.908398487343678800979333167092, 34.877716185773255233434085255477, 34.847085419978622153935873056351]
[ 39.550325718654342056411226461814*exp(-225179981368524800/835346479735089097) + 481/100, 34.985316754393166434732500261214, 34.955630743789812620660943775754, 34.925992832446999368585042111011, 34.896402941586516720813079543496, 34.866860992558868423713792152919, 34.837366906843061793020519742962, 34.807920606046397921889222858494, 34.778522011904262231151704807981, 34.749171046279915361206288571933,  34.71986763116428440498910696894, 34.690611688675754481470071462641, 34.661403141059960649118490528214, 34.632241910689580158784212558069, 34.603127920064125045441070875828, 34.574061091809735058240309547677]
[ 39.170027223069484445112107583184*exp(-225179981368524800/835346479735089097) + 481/100, 34.696274174772569526134787462171, 34.667980375615267802954754473218, 34.639731021583119601707165369322, 34.611526042067822189989969757587, 34.583365366572960800285316466034,  34.55524892471383147242893467891, 34.527176646217264176322581012657, 34.499148460921446214446573735742, 34.471164298775745903730135079393, 34.443224089840536536337961225519, 34.415327764287020618932137094287, 34.387475252397054389969209488887, 34.359666484562972614592927490568, 34.331901391287413656683853234879, 34.304179903183144827627739341844]
[ 38.797961775865999940468008441987*exp(-225179981368524800/835346479735089097) + 481/100, 34.413340578963391344993299392547, 34.386260925401824186678954833182, 34.359222687813323825545927461719, 34.332225802105908292958560192981, 34.305270204286515583411192649254, 34.278355830460851105792830617989, 34.251482616833235369680612968383, 34.224650499706451906300250190062, 34.197859415481595423792165364369,   34.1711093006579201964226241701, 34.144400091832688687379695462401, 34.117731725701020404794438047136, 34.091104139055740990628262504745, 34.064517268787231542067969298687, 34.037971051883278165070515935362]
[ 38.433853254693336951690775746305*exp(-225179981368524800/835346479735089097) + 481/100, 34.136341457621564320271404773047, 34.110334104090431586033823799587, 34.084365614530290616521173761647, 34.058435930149236384828803299972, 34.032544992244055721574925949361, 34.006692742200093627221831752757, 33.980879121491119785712405842062, 33.955104071679195279119037854183, 33.929367534414539503002461525832, 33.903669451435397282178518601355, 33.878009764567906186591295294999, 33.852388415725964046991532973945, 33.826805346911096670119667471838, 33.801260500212325753093303505677, 33.775753817806036996699382052718]
[ 38.077438207497514650554507932105*exp(-225179981368524800/835346479735089097) + 481/100, 33.865102226998355598013612059571, 33.840051841412804298184997364362, 33.815038141026827916445804160902, 33.790061071428763960291969118318, 33.765120578287421613425006157114,  33.74021660735196282160038865577, 33.715349104451783554022701598994, 33.690518015496395240028618808004, 33.665723286475306380799142085829, 33.640964863457904335842920240841,  33.61624269259333728399284652062, 33.591556720110396358658512996427, 33.566906892317397957077479886954, 33.542293155602066223308696699505, 33.517715456431415704711790397965]
[ 37.728465111690641810884888257068*exp(-225179981368524800/835346479735089097) + 481/100, 33.599450857906548510785105669256, 33.575262094141160335142060728507, 33.551108134618215257130660429698, 33.526988928594441648551095504351,  33.50290442540032961470577643053, 33.478854574440023861679985183894, 33.454839325191216719066502523225, 33.430858627205041317908851001249, 33.406912430105964923638120379313, 33.383000683591682423778668139529, 33.359123337433009970198313331014,  33.33528034147377877567896705853, 33.311471645630729064583967522891, 33.287697199893404177398711653524, 33.263956954324044828921499035396]
[ 37.386693685989902334940781686332*exp(-225179981368524800/835346479735089097) + 481/100, 33.339219334249386341000962846114, 33.315812279395327400491496576674, 33.292438389450709083624238167469, 33.269097616778983490787271960405, 33.245789913811815643106133330511, 33.222515233048985886655945512032, 33.199273527058292436165467032555,  33.17606474847545405801383842357, 33.152888850004012892321101167002, 33.129745784415237413933845722894, 33.106635504548025532107628964205, 33.083557963308807828688084421215, 33.060513113671450934592931410731,  33.03750090867716104439737139499, 33.014521301434387568825641782138]
[ 37.051894250521774118638478762951*exp(-225179981368524800/835346479735089097) + 481/100, 33.084244450303545469532641361326, 33.061551352048520712571662125427, 33.038889978192755752841205661606, 33.016260283755860463482410263335, 32.993662223821018542910561538163, 32.971095753534897736402896593801, 32.948560828107560184338545799278, 32.926057402812372896912087963393, 32.903585432985918355142446228994, 32.881144874027905237999103083956, 32.858735681401079275467863638617, 32.836357810631134227378646715358, 32.814011217306622987818033339449, 32.791695857078868814949551911801, 32.769411685661876686064928684214]
[ 36.723847131209846119873372976298*exp(-225179981368524800/835346479735089097) + 481/100, 32.834368219502799917803568518411, 32.812331073347544487545285231591, 32.790324376680460335016566741399, 32.768348086810653248137403638575, 32.746402161106888286739365879363,   32.7244865569975064796722306738, 32.702601231970341638104537391428, 32.680746143572637284856131804462, 32.658921249410963699600987511426, 32.637126507151135079778817593264, 32.615361874518126817054214449576, 32.593627309295992889162280345255, 32.571922769327783366979935467796, 32.550248212515462036662314253514, 32.528603596819824136683884387091]
[ 36.402342104841539530407741744426*exp(-225179981368524800/835346479735089097) + 481/100, 32.589438048354005925543596810984, 32.568006779978668760024252453467, 32.546604825565984097669992638245, 32.525232144412399615369469511568, 32.503888695870693180094284144099, 32.482574439349894957215948195069, 32.461289334315209626414096613339, 32.440033340287938705027459850801, 32.418806416845402978699308850483, 32.397608523620865039169290576441, 32.376439620303451929063776075352, 32.355299666638077893537047001122, 32.334188622425367238615850194115, 32.313106447521577296100053286215, 32.292053101838521494872337402274]
[ 36.087177881545794950236170650496*exp(-225179981368524800/835346479735089097) + 481/100, 32.349306765663361944508025595856, 32.328437835976359245457499481213, 32.307597203132329601404362323686, 32.286784828163285890159264152978, 32.266000672154721330873033208839, 32.245244696245536147002322188552, 32.224516861627964329733102108723, 32.203817129547500501724510550801, 32.183145461302826881035749100728, 32.162501818245740345098912577158, 32.141886161781079594600820169992, 32.121298453366652417137105882073, 32.100738654513163050502012681943, 32.080206726784139645477521535052, 32.059702631795861827985632985073]
[ 35.778161621715111616704129136789*exp(-225179981368524800/835346479735089097) + 481/100, 32.113832561829607030278102562154, 32.093487878980321869169709575908, 32.073170577256185644143218949226, 32.052880619212889166154601235302, 32.032617967457150586867211866369, 32.012382584646645917747080623151, 31.992174433489939643663294835415, 31.971993476746415430865042221051, 31.951839677226206929207053683598, 31.931712997790128668495360563838, 31.911613401349607048825454780463, 31.891540850866611424785113998146,  31.87149530935358528339432742889, 31.851476739873377515654931104729, 31.831485105539173781582734456883]
[ 35.475108484675353838439853956475*exp(-225179981368524800/835346479735089097) + 481/100, 31.882878872388165649285085649429, 31.863024931098134957042717945364, 31.843197542679769854016086977665, 31.823396671032527739817626576194, 31.803622280104772457537694005409, 31.783874333893708092419715603137, 31.764152796445312860049309654002,  31.74445763185427308393645230115,  31.72478880426391726236991555923, 31.705146277866150224423369530634, 31.685530016901387374992703746075, 31.665939985658489028744285149986,  31.64637614847469483285403263133,  31.62683846973555827841735016134, 31.607326913874881300410122541975]
[ 35.177841206649081005095229888288*exp(-225179981368524800/835346479735089097) + 481/100, 31.656314227630012076472549533043, 31.636921419786369064492904173006, 31.617554412485063562735184825651, 31.598213170815325042683022158071, 31.578897659913449134266263908405, 31.559607844962734222905434675627, 31.540343691193418131872222708608, 31.521105163882614889851288028728, 31.501892228354251583588840322307, 31.482704849979005295513588934303, 31.463542994174240126215820983225, 31.444406626403944301670517099413, 31.425295712178667365090567564949, 31.406210217055457453296304703811, 31.387150106637798657487720235707]
[ 34.886189705775962085895109502172*exp(-225179981368524800/835346479735089097) + 481/100, 31.434012082473754926729514068303, 31.415054138743582342755449619331, 31.396121309507330884789594995488, 31.377213560911223906028218396035,  31.35833085914694985430544847053, 31.339473170451601261673127439174, 31.320640461107613815760740540918, 31.301832697442705512805894245439, 31.283049845829815892245962242683, 31.264291872687045352761664605241, 31.245558744477594549663491704604, 31.226850427709703873512030452617, 31.208166888936593009863396234495, 31.189508094756400580031119499812,  31.17087401181212386275598138317]
[  34.59999071214986121311672267937*exp(-225179981368524800/835346479735089097) + 481/100,  31.21585063592078407083721451954, 31.197304168985031875021611516425, 31.178782188649776944608435931982,  31.16028466200298476881685525801, 31.141811556176690494752269640856, 31.123362838346939963889879764879, 31.104938475733730827361163705851, 31.086538435600953739938034326926, 31.068162685256333632609589197685,  31.04981119205137106364650523735, 31.031483923381283648048270316873, 31.013180846684947565268583901541, 30.994901929444839145114398476133, 30.976647139186976531714212968883, 30.958416443480861425451368678691]
[ 34.319087421008845555933531360374*exp(-225179981368524800/835346479735089097) + 481/100,  31.00171264628154839937537899631, 30.983556773865589452704483852813,  30.96542481141133809616848349913, 30.947316726847848954760417710815, 30.929232488147028997013244166447, 30.911172063323580321275279601111, 30.893135420434943018288182027153, 30.875122527581238109965800118739,  30.85713335290521056427235123437,  30.83916786459217238609852474893, 30.821226030869945784034242384434,  30.80330782000880641293694206655, 30.785413200321426692194386492434, 30.767542140162819199581132074761, 30.749694607930280140607928227193]
[ 34.043329167373793524241593182154*exp(-225179981368524800/835346479735089097) + 481/100, 30.791485246287640039296815819412, 30.773701277558760132015351274208, 30.755940687505730002397411378755, 30.738203444810293507740903924062, 30.720489518195984959525551556256, 30.702798876428073401788160893613, 30.685131488313506963711216705664, 30.667487322700857286326043289803, 30.649866348480264023231906499886, 30.632268534583379415232561025931,  30.61469384998331293879187849433, 30.597142263694576028210322754265, 30.579613744773026871424169338516, 30.562108262315815279329496535716, 30.544625785461327628533105786682]
[ 33.772571120575338186618950657882*exp(-225179981368524800/835346479735089097) + 481/100,  30.58505976081477432363261228151, 30.567630933617195149469483549989, 30.550224994081115304859210399069, 30.532841911562925019677072700368, 30.515481655459879648672157873003, 30.498144195210045216504228877308, 30.480829500292244035262925978421, 30.463537540226000394372906347469, 30.446268284571486322788653668797, 30.429021702929467423382817852155, 30.411797764941248779432072709469, 30.394596440288620933104607046743,  30.37741769869380593585349204321, 30.360261509919403470620295042119,  30.34312784376833704575343696091]
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However when I do the boxplot command:

boxplot (x)
%The following error come up
Error using boxplot>straightenX (line 893)
'X' parameter must be a numeric vector or matrix.

Error in boxplot (line 273)
[xDat,gDat,origRow,xlen,gexplicit,origInd,origNumXCols] = straightenX(x,g);

I thought maybe if I rounded the value within the matrix it will be solved but when I do:

round(x,2)
%The following error came up
Error using sym/round
Too many input arguments.

So what is a good solution for this error in odrer to be able to get the boxplot for my matrix?