title: Want a Frequency Polygon , however i keep getting straight vertical lines instead of a continues horizontal line through the time frame?
body: <p>Here is the data set I am working with. There is roughly 1000 rows. the end goal is,  I want to visualise the the count of cars by vehicle every 15 minute interval from 07:00 am to 18:00 pm. before dealing with the time intervals however, i have a problem.</p>
  <p>Here is the data set.</p>
  <p>dput(Trafic.df)</p>
  <p>5281 2016-11-23 07:00:00   DC     PCL     0 07:00:00
  5282 2016-11-23 07:00:00   DC     MCL     0 07:00:00
  5283 2016-11-23 07:00:00   DC     CAR     0 07:00:00
  5284 2016-11-23 07:00:00   DC    TAXI     0 07:00:00
  5285 2016-11-23 07:00:00   DC     LGV     0 07:00:00
  5286 2016-11-23 07:00:00   DC    OGV1     0 07:00:00
  5287 2016-11-23 07:00:00   DC    OGV2     0 07:00:00
  5288 2016-11-23 07:00:00   DC     CDB     0 07:00:00
  5289 2016-11-23 07:00:00   DC     BEB     0 07:00:00
  5290 2016-11-23 07:00:00   DC      OB     0 07:00:00
  5291 2016-11-23 07:15:00   DC     PCL     0 07:15:00
  5292 2016-11-23 07:15:00   DC     MCL     0 07:15:00
  5293 2016-11-23 07:15:00   DC     CAR     0 07:15:00
  5294 2016-11-23 07:15:00   DC    TAXI     0 07:15:00
  5295 2016-11-23 07:15:00   DC     LGV     0 07:15:00
  5296 2016-11-23 07:15:00   DC    OGV1     0 07:15:00
  5297 2016-11-23 07:15:00   DC    OGV2     0 07:15:00
  5298 2016-11-23 07:15:00   DC     CDB     0 07:15:00
  5299 2016-11-23 07:15:00   DC     BEB     1 07:15:00
  5300 2016-11-23 07:15:00   DC      OB     0 07:15:00
  5301 2016-11-23 07:30:00   DC     PCL     1 07:30:00
  5302 2016-11-23 07:30:00   DC     MCL     0 07:30:00
  5303 2016-11-23 07:30:00   DC     CAR     5 07:30:00
  5304 2016-11-23 07:30:00   DC    TAXI     0 07:30:00
  5305 2016-11-23 07:30:00   DC     LGV     1 07:30:00
  5306 2016-11-23 07:30:00   DC    OGV1     0 07:30:00
  5307 2016-11-23 07:30:00   DC    OGV2     0 07:30:00
  5308 2016-11-23 07:30:00   DC     CDB     0 07:30:00
  5309 2016-11-23 07:30:00   DC     BEB     0 07:30:00
  5310 2016-11-23 07:30:00   DC      OB     0 07:30:00
  5311 2016-11-23 07:45:00   DC     PCL     0 07:45:00
  5312 2016-11-23 07:45:00   DC     MCL     0 07:45:00
  5313 2016-11-23 07:45:00   DC     CAR     3 07:45:00
  5314 2016-11-23 07:45:00   DC    TAXI     0 07:45:00
  5315 2016-11-23 07:45:00   DC     LGV     1 07:45:00
  5316 2016-11-23 07:45:00   DC    OGV1     0 07:45:00
  5317 2016-11-23 07:45:00   DC    OGV2     0 07:45:00
  5318 2016-11-23 07:45:00   DC     CDB     0 07:45:00
  5319 2016-11-23 07:45:00   DC     BEB     0 07:45:00
  5320 2016-11-23 07:45:00   DC      OB     0 07:45:00
  5321 2016-11-23 08:00:00   DC     PCL     0 08:00:00
  5322 2016-11-23 08:00:00   DC     MCL     0 08:00:00
  5323 2016-11-23 08:00:00   DC     CAR     8 08:00:00
  5324 2016-11-23 08:00:00   DC    TAXI     0 08:00:00
  5325 2016-11-23 08:00:00   DC     LGV     0 08:00:00
  5326 2016-11-23 08:00:00   DC    OGV1     0 08:00:00
  5327 2016-11-23 08:00:00   DC    OGV2     0 08:00:00
  5328 2016-11-23 08:00:00   DC     CDB     0 08:00:00
  5329 2016-11-23 08:00:00   DC     BEB     0 08:00:00
  5330 2016-11-23 08:00:00   DC      OB     0 08:00:00
  5331 2016-11-23 08:15:00   DC     PCL     0 08:15:00
  5332 2016-11-23 08:15:00   DC     MCL     0 08:15:00
  5333 2016-11-23 08:15:00   DC     CAR     4 08:15:00
  5334 2016-11-23 08:15:00   DC    TAXI     0 08:15:00
  5335 2016-11-23 08:15:00   DC     LGV     0 08:15:00
  5336 2016-11-23 08:15:00   DC    OGV1     0 08:15:00
  5337 2016-11-23 08:15:00   DC    OGV2     0 08:15:00
  5338 2016-11-23 08:15:00   DC     CDB     0 08:15:00
  5339 2016-11-23 08:15:00   DC     BEB     0 08:15:00
  5340 2016-11-23 08:15:00   DC      OB     0 08:15:00
  5341 2016-11-23 08:30:00   DC     PCL     0 08:30:00
  5342 2016-11-23 08:30:00   DC     MCL     0 08:30:00
  5343 2016-11-23 08:30:00   DC     CAR     6 08:30:00
  5344 2016-11-23 08:30:00   DC    TAXI     0 08:30:00
  5345 2016-11-23 08:30:00   DC     LGV     0 08:30:00
  5346 2016-11-23 08:30:00   DC    OGV1     1 08:30:00
  5347 2016-11-23 08:30:00   DC    OGV2     0 08:30:00
  5348 2016-11-23 08:30:00   DC     CDB     0 08:30:00
  5349 2016-11-23 08:30:00   DC     BEB     1 08:30:00
  5350 2016-11-23 08:30:00   DC      OB     0 08:30:00
  5351 2016-11-23 08:45:00   DC     PCL     0 08:45:00
  5352 2016-11-23 08:45:00   DC     MCL     0 08:45:00
  5353 2016-11-23 08:45:00   DC     CAR     8 08:45:00
  5354 2016-11-23 08:45:00   DC    TAXI     0 08:45:00
  5355 2016-11-23 08:45:00   DC     LGV     1 08:45:00
  5356 2016-11-23 08:45:00   DC    OGV1     0 08:45:00
  5357 2016-11-23 08:45:00   DC    OGV2     0 08:45:00
  5358 2016-11-23 08:45:00   DC     CDB     0 08:45:00
  5359 2016-11-23 08:45:00   DC     BEB     0 08:45:00
  5360 2016-11-23 08:45:00   DC      OB     0 08:45:00
  5361 2016-11-23 09:00:00   DC     PCL     1 09:00:00
  5362 2016-11-23 09:00:00   DC     MCL     0 09:00:00
  5363 2016-11-23 09:00:00   DC     CAR     5 09:00:00
  5364 2016-11-23 09:00:00   DC    TAXI     1 09:00:00
  5365 2016-11-23 09:00:00   DC     LGV     0 09:00:00
  5366 2016-11-23 09:00:00   DC    OGV1     0 09:00:00
  5367 2016-11-23 09:00:00   DC    OGV2     0 09:00:00
  5368 2016-11-23 09:00:00   DC     CDB     0 09:00:00
  5369 2016-11-23 09:00:00   DC     BEB     0 09:00:00
  5370 2016-11-23 09:00:00   DC      OB     0 09:00:00
  5371 2016-11-23 09:15:00   DC     PCL     0 09:15:00
  5372 2016-11-23 09:15:00   DC     MCL     0 09:15:00
  5373 2016-11-23 09:15:00   DC     CAR    11 09:15:00
  5374 2016-11-23 09:15:00   DC    TAXI     1 09:15:00
  5375 2016-11-23 09:15:00   DC     LGV     4 09:15:00
  5376 2016-11-23 09:15:00   DC    OGV1     0 09:15:00
  5377 2016-11-23 09:15:00   DC    OGV2     0 09:15:00
  5378 2016-11-23 09:15:00   DC     CDB     0 09:15:00
  5379 2016-11-23 09:15:00   DC     BEB     1 09:15:00
  5380 2016-11-23 09:15:00   DC      OB     0 09:15:00
  5381 2016-11-23 09:30:00   DC     PCL     0 09:30:00
  5382 2016-11-23 09:30:00   DC     MCL     0 09:30:00
  5383 2016-11-23 09:30:00   DC     CAR    10 09:30:00
  5384 2016-11-23 09:30:00   DC    TAXI     2 09:30:00
  5385 2016-11-23 09:30:00   DC     LGV     0 09:30:00
  5386 2016-11-23 09:30:00   DC    OGV1     0 09:30:00
  5387 2016-11-23 09:30:00   DC    OGV2     0 09:30:00
  5388 2016-11-23 09:30:00   DC     CDB     0 09:30:00
  5389 2016-11-23 09:30:00   DC     BEB     0 09:30:00
  5390 2016-11-23 09:30:00   DC      OB     0 09:30:00
  5391 2016-11-23 09:45:00   DC     PCL     0 09:45:00
  5392 2016-11-23 09:45:00   DC     MCL     0 09:45:00
  5393 2016-11-23 09:45:00   DC     CAR     9 09:45:00
  5394 2016-11-23 09:45:00   DC    TAXI     1 09:45:00
  5395 2016-11-23 09:45:00   DC     LGV     0 09:45:00
  5396 2016-11-23 09:45:00   DC    OGV1     0 09:45:00
  5397 2016-11-23 09:45:00   DC    OGV2     0 09:45:00
  5398 2016-11-23 09:45:00   DC     CDB     0 09:45:00
  5399 2016-11-23 09:45:00   DC     BEB     0 09:45:00
  5400 2016-11-23 09:45:00   DC      OB     0 09:45:00
  5401 2016-11-23 10:00:00   DC     PCL     0 10:00:00
  5402 2016-11-23 10:00:00   DC     MCL     0 10:00:00
  5403 2016-11-23 10:00:00   DC     CAR    14 10:00:00
  5404 2016-11-23 10:00:00   DC    TAXI     0 10:00:00
  5405 2016-11-23 10:00:00   DC     LGV     0 10:00:00
  5406 2016-11-23 10:00:00   DC    OGV1     1 10:00:00
  5407 2016-11-23 10:00:00   DC    OGV2     0 10:00:00
  5408 2016-11-23 10:00:00   DC     CDB     0 10:00:00
  5409 2016-11-23 10:00:00   DC     BEB     0 10:00:00
  5410 2016-11-23 10:00:00   DC      OB     0 10:00:00
  5411 2016-11-23 10:15:00   DC     PCL     0 10:15:00
  5412 2016-11-23 10:15:00   DC     MCL     0 10:15:00
  5413 2016-11-23 10:15:00   DC     CAR     4 10:15:00
  5414 2016-11-23 10:15:00   DC    TAXI     0 10:15:00
  5415 2016-11-23 10:15:00   DC     LGV     0 10:15:00
  5416 2016-11-23 10:15:00   DC    OGV1     0 10:15:00
  5417 2016-11-23 10:15:00   DC    OGV2     0 10:15:00
  5418 2016-11-23 10:15:00   DC     CDB     1 10:15:00
  5419 2016-11-23 10:15:00   DC     BEB     1 10:15:00
  5420 2016-11-23 10:15:00   DC      OB     0 10:15:00
  5421 2016-11-23 10:30:00   DC     PCL     1 10:30:00
  5422 2016-11-23 10:30:00   DC     MCL     0 10:30:00
  5423 2016-11-23 10:30:00   DC     CAR     8 10:30:00
  5424 2016-11-23 10:30:00   DC    TAXI     0 10:30:00
  5425 2016-11-23 10:30:00   DC     LGV     1 10:30:00
  5426 2016-11-23 10:30:00   DC    OGV1     0 10:30:00
  5427 2016-11-23 10:30:00   DC    OGV2     0 10:30:00
  5428 2016-11-23 10:30:00   DC     CDB     0 10:30:00
  5429 2016-11-23 10:30:00   DC     BEB     0 10:30:00
  5430 2016-11-23 10:30:00   DC      OB     1 10:30:00
  5431 2016-11-23 10:45:00   DC     PCL     0 10:45:00
  5432 2016-11-23 10:45:00   DC     MCL     0 10:45:00
  5433 2016-11-23 10:45:00   DC     CAR    12 10:45:00
  5434 2016-11-23 10:45:00   DC    TAXI     0 10:45:00
  5435 2016-11-23 10:45:00   DC     LGV     0 10:45:00
  5436 2016-11-23 10:45:00   DC    OGV1     0 10:45:00
  5437 2016-11-23 10:45:00   DC    OGV2     0 10:45:00
  5438 2016-11-23 10:45:00   DC     CDB     0 10:45:00
  5439 2016-11-23 10:45:00   DC     BEB     0 10:45:00
  5440 2016-11-23 10:45:00   DC      OB     0 10:45:00
  5441 2016-11-23 11:00:00   DC     PCL     0 11:00:00
  5442 2016-11-23 11:00:00   DC     MCL     0 11:00:00
  5443 2016-11-23 11:00:00   DC     CAR     7 11:00:00
  5444 2016-11-23 11:00:00   DC    TAXI     0 11:00:00
  5445 2016-11-23 11:00:00   DC     LGV     1 11:00:00
  5446 2016-11-23 11:00:00   DC    OGV1     0 11:00:00
  5447 2016-11-23 11:00:00   DC    OGV2     0 11:00:00
  5448 2016-11-23 11:00:00   DC     CDB     0 11:00:00
  5449 2016-11-23 11:00:00   DC     BEB     0 11:00:00
  5450 2016-11-23 11:00:00   DC      OB     0 11:00:00
  5451 2016-11-23 11:15:00   DC     PCL     0 11:15:00
  5452 2016-11-23 11:15:00   DC     MCL     0 11:15:00
  5453 2016-11-23 11:15:00   DC     CAR     9 11:15:00
  5454 2016-11-23 11:15:00   DC    TAXI     0 11:15:00
  5455 2016-11-23 11:15:00   DC     LGV     0 11:15:00
  5456 2016-11-23 11:15:00   DC    OGV1     0 11:15:00
  5457 2016-11-23 11:15:00   DC    OGV2     0 11:15:00
  5458 2016-11-23 11:15:00   DC     CDB     0 11:15:00
  5459 2016-11-23 11:15:00   DC     BEB     1 11:15:00
  5460 2016-11-23 11:15:00   DC      OB     0 11:15:00
  5461 2016-11-23 11:30:00   DC     PCL     0 11:30:00
  5462 2016-11-23 11:30:00   DC     MCL     0 11:30:00
  5463 2016-11-23 11:30:00   DC     CAR     4 11:30:00
  5464 2016-11-23 11:30:00   DC    TAXI     1 11:30:00
  5465 2016-11-23 11:30:00   DC     LGV     0 11:30:00
  5466 2016-11-23 11:30:00   DC    OGV1     0 11:30:00
  5467 2016-11-23 11:30:00   DC    OGV2     0 11:30:00
  5468 2016-11-23 11:30:00   DC     CDB     0 11:30:00
  5469 2016-11-23 11:30:00   DC     BEB     0 11:30:00
  5470 2016-11-23 11:30:00   DC      OB     0 11:30:00
  5471 2016-11-23 11:45:00   DC     PCL     0 11:45:00
  5472 2016-11-23 11:45:00   DC     MCL     0 11:45:00
  5473 2016-11-23 11:45:00   DC     CAR     5 11:45:00
  5474 2016-11-23 11:45:00   DC    TAXI     1 11:45:00
  5475 2016-11-23 11:45:00   DC     LGV     0 11:45:00
  5476 2016-11-23 11:45:00   DC    OGV1     0 11:45:00
  5477 2016-11-23 11:45:00   DC    OGV2     0 11:45:00
  5478 2016-11-23 11:45:00   DC     CDB     0 11:45:00
  5479 2016-11-23 11:45:00   DC     BEB     0 11:45:00
  5480 2016-11-23 11:45:00   DC      OB     0 11:45:00
  5481 2016-11-23 12:00:00   DC     PCL     0 12:00:00
  5482 2016-11-23 12:00:00   DC     MCL     0 12:00:00
  5483 2016-11-23 12:00:00   DC     CAR    10 12:00:00
  5484 2016-11-23 12:00:00   DC    TAXI     0 12:00:00
  5485 2016-11-23 12:00:00   DC     LGV     0 12:00:00
  5486 2016-11-23 12:00:00   DC    OGV1     0 12:00:00
  5487 2016-11-23 12:00:00   DC    OGV2     0 12:00:00
  5488 2016-11-23 12:00:00   DC     CDB     0 12:00:00
  5489 2016-11-23 12:00:00   DC     BEB     0 12:00:00
  5490 2016-11-23 12:00:00   DC      OB     0 12:00:00
  5491 2016-11-23 12:15:00   DC     PCL     0 12:15:00
  5492 2016-11-23 12:15:00   DC     MCL     0 12:15:00
  5493 2016-11-23 12:15:00   DC     CAR     9 12:15:00
  5494 2016-11-23 12:15:00   DC    TAXI     2 12:15:00
  5495 2016-11-23 12:15:00   DC     LGV     0 12:15:00
  5496 2016-11-23 12:15:00   DC    OGV1     0 12:15:00
  5497 2016-11-23 12:15:00   DC    OGV2     0 12:15:00
  5498 2016-11-23 12:15:00   DC     CDB     0 12:15:00
  5499 2016-11-23 12:15:00   DC     BEB     0 12:15:00
  5500 2016-11-23 12:15:00   DC      OB     0 12:15:00
  5501 2016-11-23 12:30:00   DC     PCL     0 12:30:00
  5502 2016-11-23 12:30:00   DC     MCL     0 12:30:00
  5503 2016-11-23 12:30:00   DC     CAR     8 12:30:00
  5504 2016-11-23 12:30:00   DC    TAXI     0 12:30:00
  5505 2016-11-23 12:30:00   DC     LGV     0 12:30:00
  5506 2016-11-23 12:30:00   DC    OGV1     0 12:30:00
  5507 2016-11-23 12:30:00   DC    OGV2     0 12:30:00
  5508 2016-11-23 12:30:00   DC     CDB     0 12:30:00
  5509 2016-11-23 12:30:00   DC     BEB     1 12:30:00
  5510 2016-11-23 12:30:00   DC      OB     0 12:30:00
  5511 2016-11-23 12:45:00   DC     PCL     1 12:45:00
  5512 2016-11-23 12:45:00   DC     MCL     0 12:45:00
  5513 2016-11-23 12:45:00   DC     CAR     9 12:45:00
  5514 2016-11-23 12:45:00   DC    TAXI     0 12:45:00
  5515 2016-11-23 12:45:00   DC     LGV     1 12:45:00
  5516 2016-11-23 12:45:00   DC    OGV1     0 12:45:00
  5517 2016-11-23 12:45:00   DC    OGV2     0 12:45:00
  5518 2016-11-23 12:45:00   DC     CDB     0 12:45:00
  5519 2016-11-23 12:45:00   DC     BEB     0 12:45:00
  5520 2016-11-23 12:45:00   DC      OB     0 12:45:00
  5521 2016-11-23 13:00:00   DC     PCL     1 13:00:00
  5522 2016-11-23 13:00:00   DC     MCL     0 13:00:00
  5523 2016-11-23 13:00:00   DC     CAR     8 13:00:00
  5524 2016-11-23 13:00:00   DC    TAXI     0 13:00:00
  5525 2016-11-23 13:00:00   DC     LGV     1 13:00:00
  5526 2016-11-23 13:00:00   DC    OGV1     0 13:00:00
  5527 2016-11-23 13:00:00   DC    OGV2     0 13:00:00
  5528 2016-11-23 13:00:00   DC     CDB     0 13:00:00
  5529 2016-11-23 13:00:00   DC     BEB     0 13:00:00
  5530 2016-11-23 13:00:00   DC      OB     0 13:00:00
  5531 2016-11-23 13:15:00   DC     PCL     0 13:15:00
  5532 2016-11-23 13:15:00   DC     MCL     0 13:15:00
  5533 2016-11-23 13:15:00   DC     CAR    15 13:15:00
  5534 2016-11-23 13:15:00   DC    TAXI     0 13:15:00
  5535 2016-11-23 13:15:00   DC     LGV     0 13:15:00
  5536 2016-11-23 13:15:00   DC    OGV1     0 13:15:00
  5537 2016-11-23 13:15:00   DC    OGV2     0 13:15:00
  5538 2016-11-23 13:15:00   DC     CDB     0 13:15:00
  5539 2016-11-23 13:15:00   DC     BEB     1 13:15:00
  5540 2016-11-23 13:15:00   DC      OB     0 13:15:00
  5541 2016-11-23 13:30:00   DC     PCL     0 13:30:00
  5542 2016-11-23 13:30:00   DC     MCL     0 13:30:00
  5543 2016-11-23 13:30:00   DC     CAR     7 13:30:00
  5544 2016-11-23 13:30:00   DC    TAXI     0 13:30:00
  5545 2016-11-23 13:30:00   DC     LGV     1 13:30:00
  5546 2016-11-23 13:30:00   DC    OGV1     0 13:30:00
  5547 2016-11-23 13:30:00   DC    OGV2     0 13:30:00
  5548 2016-11-23 13:30:00   DC     CDB     0 13:30:00
  5549 2016-11-23 13:30:00   DC     BEB     0 13:30:00
  5550 2016-11-23 13:30:00   DC      OB     0 13:30:00
  5551 2016-11-23 13:45:00   DC     PCL     0 13:45:00
  5552 2016-11-23 13:45:00   DC     MCL     0 13:45:00
  5553 2016-11-23 13:45:00   DC     CAR    16 13:45:00
  5554 2016-11-23 13:45:00   DC    TAXI     1 13:45:00
  5555 2016-11-23 13:45:00   DC     LGV     1 13:45:00
  5556 2016-11-23 13:45:00   DC    OGV1     0 13:45:00
  5557 2016-11-23 13:45:00   DC    OGV2     0 13:45:00
  5558 2016-11-23 13:45:00   DC     CDB     0 13:45:00
  5559 2016-11-23 13:45:00   DC     BEB     0 13:45:00
  5560 2016-11-23 13:45:00   DC      OB     0 13:45:00
  5561 2016-11-23 14:00:00   DC     PCL     0 14:00:00
  5562 2016-11-23 14:00:00   DC     MCL     0 14:00:00
  5563 2016-11-23 14:00:00   DC     CAR    15 14:00:00
  5564 2016-11-23 14:00:00   DC    TAXI     1 14:00:00
  5565 2016-11-23 14:00:00   DC     LGV     1 14:00:00
  5566 2016-11-23 14:00:00   DC    OGV1     0 14:00:00
  5567 2016-11-23 14:00:00   DC    OGV2     0 14:00:00
  5568 2016-11-23 14:00:00   DC     CDB     1 14:00:00
  5569 2016-11-23 14:00:00   DC     BEB     0 14:00:00
  5570 2016-11-23 14:00:00   DC      OB     0 14:00:00
  5571 2016-11-23 14:15:00   DC     PCL     0 14:15:00
  5572 2016-11-23 14:15:00   DC     MCL     0 14:15:00
  5573 2016-11-23 14:15:00   DC     CAR     7 14:15:00
  5574 2016-11-23 14:15:00   DC    TAXI     1 14:15:00
  5575 2016-11-23 14:15:00   DC     LGV     0 14:15:00
  5576 2016-11-23 14:15:00   DC    OGV1     0 14:15:00
  5577 2016-11-23 14:15:00   DC    OGV2     0 14:15:00
  5578 2016-11-23 14:15:00   DC     CDB     0 14:15:00
  5579 2016-11-23 14:15:00   DC     BEB     1 14:15:00
  5580 2016-11-23 14:15:00   DC      OB     0 14:15:00
  5581 2016-11-23 14:30:00   DC     PCL     0 14:30:00
  5582 2016-11-23 14:30:00   DC     MCL     0 14:30:00
  5583 2016-11-23 14:30:00   DC     CAR     3 14:30:00
  5584 2016-11-23 14:30:00   DC    TAXI     4 14:30:00
  5585 2016-11-23 14:30:00   DC     LGV     1 14:30:00
  5586 2016-11-23 14:30:00   DC    OGV1     0 14:30:00
  5587 2016-11-23 14:30:00   DC    OGV2     0 14:30:00
  5588 2016-11-23 14:30:00   DC     CDB     0 14:30:00
  5589 2016-11-23 14:30:00   DC     BEB     0 14:30:00
  5590 2016-11-23 14:30:00   DC      OB     0 14:30:00
  5591 2016-11-23 14:45:00   DC     PCL     0 14:45:00
  5592 2016-11-23 14:45:00   DC     MCL     0 14:45:00
  5593 2016-11-23 14:45:00   DC     CAR     5 14:45:00
  5594 2016-11-23 14:45:00   DC    TAXI     0 14:45:00
  5595 2016-11-23 14:45:00   DC     LGV     0 14:45:00
  5596 2016-11-23 14:45:00   DC    OGV1     0 14:45:00
  5597 2016-11-23 14:45:00   DC    OGV2     0 14:45:00
  5598 2016-11-23 14:45:00   DC     CDB     0 14:45:00
  5599 2016-11-23 14:45:00   DC     BEB     0 14:45:00
  5600 2016-11-23 14:45:00   DC      OB     0 14:45:00
  5601 2016-11-23 15:00:00   DC     PCL     1 15:00:00
  5602 2016-11-23 15:00:00   DC     MCL     0 15:00:00
  5603 2016-11-23 15:00:00   DC     CAR    16 15:00:00
  5604 2016-11-23 15:00:00   DC    TAXI     1 15:00:00
  5605 2016-11-23 15:00:00   DC     LGV     2 15:00:00
  5606 2016-11-23 15:00:00   DC    OGV1     0 15:00:00
  5607 2016-11-23 15:00:00   DC    OGV2     0 15:00:00
  5608 2016-11-23 15:00:00   DC     CDB     0 15:00:00
  5609 2016-11-23 15:00:00   DC     BEB     0 15:00:00
  5610 2016-11-23 15:00:00   DC      OB     0 15:00:00
  5611 2016-11-23 15:15:00   DC     PCL     0 15:15:00
  5612 2016-11-23 15:15:00   DC     MCL     0 15:15:00
  5613 2016-11-23 15:15:00   DC     CAR    10 15:15:00
  5614 2016-11-23 15:15:00   DC    TAXI     0 15:15:00
  5615 2016-11-23 15:15:00   DC     LGV     1 15:15:00
  5616 2016-11-23 15:15:00   DC    OGV1     0 15:15:00
  5617 2016-11-23 15:15:00   DC    OGV2     0 15:15:00
  5618 2016-11-23 15:15:00   DC     CDB     0 15:15:00
  5619 2016-11-23 15:15:00   DC     BEB     1 15:15:00
  5620 2016-11-23 15:15:00   DC      OB     0 15:15:00
  5621 2016-11-23 15:30:00   DC     PCL     2 15:30:00
  5622 2016-11-23 15:30:00   DC     MCL     0 15:30:00
  5623 2016-11-23 15:30:00   DC     CAR     8 15:30:00
  5624 2016-11-23 15:30:00   DC    TAXI     1 15:30:00
  5625 2016-11-23 15:30:00   DC     LGV     1 15:30:00
  5626 2016-11-23 15:30:00   DC    OGV1     0 15:30:00
  5627 2016-11-23 15:30:00   DC    OGV2     0 15:30:00
  5628 2016-11-23 15:30:00   DC     CDB     0 15:30:00
  5629 2016-11-23 15:30:00   DC     BEB     0 15:30:00
  5630 2016-11-23 15:30:00   DC      OB     0 15:30:00
  5631 2016-11-23 15:45:00   DC     PCL     1 15:45:00
  5632 2016-11-23 15:45:00   DC     MCL     0 15:45:00
  5633 2016-11-23 15:45:00   DC     CAR    12 15:45:00
  5634 2016-11-23 15:45:00   DC    TAXI     2 15:45:00
  5635 2016-11-23 15:45:00   DC     LGV     1 15:45:00
  5636 2016-11-23 15:45:00   DC    OGV1     0 15:45:00
  5637 2016-11-23 15:45:00   DC    OGV2     0 15:45:00
  5638 2016-11-23 15:45:00   DC     CDB     0 15:45:00
  5639 2016-11-23 15:45:00   DC     BEB     0 15:45:00
  5640 2016-11-23 15:45:00   DC      OB     0 15:45:00
  5641 2016-11-23 16:00:00   DC     PCL     2 16:00:00
  5642 2016-11-23 16:00:00   DC     MCL     0 16:00:00
  5643 2016-11-23 16:00:00   DC     CAR    21 16:00:00
  5644 2016-11-23 16:00:00   DC    TAXI     0 16:00:00
  5645 2016-11-23 16:00:00   DC     LGV     0 16:00:00
  5646 2016-11-23 16:00:00   DC    OGV1     0 16:00:00
  5647 2016-11-23 16:00:00   DC    OGV2     0 16:00:00
  5648 2016-11-23 16:00:00   DC     CDB     0 16:00:00
  5649 2016-11-23 16:00:00   DC     BEB     0 16:00:00
  5650 2016-11-23 16:00:00   DC      OB     0 16:00:00
  5651 2016-11-23 16:15:00   DC     PCL     1 16:15:00
  5652 2016-11-23 16:15:00   DC     MCL     0 16:15:00
  5653 2016-11-23 16:15:00   DC     CAR    20 16:15:00
  5654 2016-11-23 16:15:00   DC    TAXI     0 16:15:00
  5655 2016-11-23 16:15:00   DC     LGV     2 16:15:00
  5656 2016-11-23 16:15:00   DC    OGV1     0 16:15:00
  5657 2016-11-23 16:15:00   DC    OGV2     0 16:15:00
  5658 2016-11-23 16:15:00   DC     CDB     0 16:15:00
  5659 2016-11-23 16:15:00   DC     BEB     0 16:15:00
  5660 2016-11-23 16:15:00   DC      OB     0 16:15:00
  5661 2016-11-23 16:30:00   DC     PCL     1 16:30:00
  5662 2016-11-23 16:30:00   DC     MCL     0 16:30:00
  5663 2016-11-23 16:30:00   DC     CAR    23 16:30:00
  5664 2016-11-23 16:30:00   DC    TAXI     0 16:30:00
  5665 2016-11-23 16:30:00   DC     LGV     0 16:30:00
  5666 2016-11-23 16:30:00   DC    OGV1     0 16:30:00
  5667 2016-11-23 16:30:00   DC    OGV2     0 16:30:00
  5668 2016-11-23 16:30:00   DC     CDB     0 16:30:00
  5669 2016-11-23 16:30:00   DC     BEB     1 16:30:00
  5670 2016-11-23 16:30:00   DC      OB     0 16:30:00
  5671 2016-11-23 16:45:00   DC     PCL     0 16:45:00
  5672 2016-11-23 16:45:00   DC     MCL     0 16:45:00
  5673 2016-11-23 16:45:00   DC     CAR    21 16:45:00
  5674 2016-11-23 16:45:00   DC    TAXI     0 16:45:00
  5675 2016-11-23 16:45:00   DC     LGV     0 16:45:00
  5676 2016-11-23 16:45:00   DC    OGV1     0 16:45:00
  5677 2016-11-23 16:45:00   DC    OGV2     0 16:45:00
  5678 2016-11-23 16:45:00   DC     CDB     0 16:45:00
  5679 2016-11-23 16:45:00   DC     BEB     0 16:45:00
  5680 2016-11-23 16:45:00   DC      OB     0 16:45:00
  5681 2016-11-23 17:00:00   DC     PCL     1 17:00:00
  5682 2016-11-23 17:00:00   DC     MCL     0 17:00:00
  5683 2016-11-23 17:00:00   DC     CAR    15 17:00:00
  5684 2016-11-23 17:00:00   DC    TAXI     1 17:00:00
  5685 2016-11-23 17:00:00   DC     LGV     0 17:00:00
  5686 2016-11-23 17:00:00   DC    OGV1     0 17:00:00
  5687 2016-11-23 17:00:00   DC    OGV2     0 17:00:00
  5688 2016-11-23 17:00:00   DC     CDB     0 17:00:00
  5689 2016-11-23 17:00:00   DC     BEB     0 17:00:00
  5690 2016-11-23 17:00:00   DC      OB     0 17:00:00
  5691 2016-11-23 17:15:00   DC     PCL     4 17:15:00
  5692 2016-11-23 17:15:00   DC     MCL     0 17:15:00
  5693 2016-11-23 17:15:00   DC     CAR    21 17:15:00
  5694 2016-11-23 17:15:00   DC    TAXI     0 17:15:00
  5695 2016-11-23 17:15:00   DC     LGV     2 17:15:00
  5696 2016-11-23 17:15:00   DC    OGV1     0 17:15:00
  5697 2016-11-23 17:15:00   DC    OGV2     0 17:15:00
  5698 2016-11-23 17:15:00   DC     CDB     0 17:15:00
  5699 2016-11-23 17:15:00   DC     BEB     0 17:15:00
  5700 2016-11-23 17:15:00   DC      OB     0 17:15:00
  5701 2016-11-23 17:30:00   DC     PCL     1 17:30:00
  5702 2016-11-23 17:30:00   DC     MCL     0 17:30:00
  5703 2016-11-23 17:30:00   DC     CAR    18 17:30:00
  5704 2016-11-23 17:30:00   DC    TAXI     0 17:30:00
  5705 2016-11-23 17:30:00   DC     LGV     0 17:30:00
  5706 2016-11-23 17:30:00   DC    OGV1     0 17:30:00
  5707 2016-11-23 17:30:00   DC    OGV2     0 17:30:00
  5708 2016-11-23 17:30:00   DC     CDB     0 17:30:00
  5709 2016-11-23 17:30:00   DC     BEB     1 17:30:00
  5710 2016-11-23 17:30:00   DC      OB     0 17:30:00
  5711 2016-11-23 17:45:00   DC     PCL     3 17:45:00
  5712 2016-11-23 17:45:00   DC     MCL     0 17:45:00
  5713 2016-11-23 17:45:00   DC     CAR    24 17:45:00
  5714 2016-11-23 17:45:00   DC    TAXI     0 17:45:00
  5715 2016-11-23 17:45:00   DC     LGV     0 17:45:00
  5716 2016-11-23 17:45:00   DC    OGV1     0 17:45:00
  5717 2016-11-23 17:45:00   DC    OGV2     0 17:45:00
  5718 2016-11-23 17:45:00   DC     CDB     0 17:45:00
  5719 2016-11-23 17:45:00   DC     BEB     0 17:45:00
  5720 2016-11-23 17:45:00   DC      OB     0 17:45:00
  5721 2016-11-23 18:00:00   DC     PCL     2 18:00:00
  5722 2016-11-23 18:00:00   DC     MCL     0 18:00:00
  5723 2016-11-23 18:00:00   DC     CAR    18 18:00:00
  5724 2016-11-23 18:00:00   DC    TAXI     0 18:00:00
  5725 2016-11-23 18:00:00   DC     LGV     1 18:00:00
  5726 2016-11-23 18:00:00   DC    OGV1     0 18:00:00
  5727 2016-11-23 18:00:00   DC    OGV2     0 18:00:00
  5728 2016-11-23 18:00:00   DC     CDB     0 18:00:00
  5729 2016-11-23 18:00:00   DC     BEB     0 18:00:00
  5730 2016-11-23 18:00:00   DC      OB     0 18:00:00
  5731 2016-11-23 18:15:00   DC     PCL     1 18:15:00
  5732 2016-11-23 18:15:00   DC     MCL     0 18:15:00
  5733 2016-11-23 18:15:00   DC     CAR    19 18:15:00
  5734 2016-11-23 18:15:00   DC    TAXI     0 18:15:00
  5735 2016-11-23 18:15:00   DC     LGV     0 18:15:00
  5736 2016-11-23 18:15:00   DC    OGV1     0 18:15:00
  5737 2016-11-23 18:15:00   DC    OGV2     0 18:15:00
  5738 2016-11-23 18:15:00   DC     CDB     0 18:15:00
  5739 2016-11-23 18:15:00   DC     BEB     0 18:15:00
  5740 2016-11-23 18:15:00   DC      OB     0 18:15:00
  5741 2016-11-23 18:30:00   DC     PCL     0 18:30:00
  5742 2016-11-23 18:30:00   DC     MCL     0 18:30:00
  5743 2016-11-23 18:30:00   DC     CAR    15 18:30:00
  5744 2016-11-23 18:30:00   DC    TAXI     0 18:30:00
  5745 2016-11-23 18:30:00   DC     LGV     1 18:30:00
  5746 2016-11-23 18:30:00   DC    OGV1     0 18:30:00
  5747 2016-11-23 18:30:00   DC    OGV2     0 18:30:00
  5748 2016-11-23 18:30:00   DC     CDB     1 18:30:00
  5749 2016-11-23 18:30:00   DC     BEB     1 18:30:00
  5750 2016-11-23 18:30:00   DC      OB     0 18:30:00
  5751 2016-11-23 18:45:00   DC     PCL     0 18:45:00
  5752 2016-11-23 18:45:00   DC     MCL     0 18:45:00
  5753 2016-11-23 18:45:00   DC     CAR     8 18:45:00
  5754 2016-11-23 18:45:00   DC    TAXI     0 18:45:00
  5755 2016-11-23 18:45:00   DC     LGV     1 18:45:00
  5756 2016-11-23 18:45:00   DC    OGV1     0 18:45:00
  5757 2016-11-23 18:45:00   DC    OGV2     0 18:45:00
  5758 2016-11-23 18:45:00   DC     CDB     0 18:45:00
  5759 2016-11-23 18:45:00   DC     BEB     0 18:45:00
  5760 2016-11-23 18:45:00   DC      OB     0 18:45:00</p>
  <p><a href="https://i.stack.imgur.com/YQcOP.jpg" rel="nofollow noreferrer">enter image description here</a></p>
  <p>when i run the code, it gives me straight vertical lines rather than continuous horizontal lines over the timeframe</p>
  <pre><code>p&lt;-ggplot(Trafic.df2, aes(x=TIME, y=Count1, group=vehicle)) +
  geom_line(aes(color=vehicle))
  
  p  
  </code></pre>
  <p><a href="https://i.stack.imgur.com/p60yX.png" rel="nofollow noreferrer">enter image description here</a></p>
  <p>I want the graph to look something like this</p>
  <p><a href="https://i.stack.imgur.com/gBOU3.png" rel="nofollow noreferrer">enter image description here</a></p>