[R] Creating a point pattern with cartesian co-ordinates

[AMFTom]

I have the following data from an image analysis program, in which the x and
y co-ordinates are locations of the centroids of shapes on a 2 dimensional
plot. The Y co-ordinates were positive, but I changed them to negative as
the resulting scatterplot was upside down (the image analysis program reads
from the top of the image to the bottom, so it seems) I now need these as
point pattern data, as I want to subsequently add marks to them (area of
shape):

Can anybody assist?

X                    Y
159.163	-165.203
162.469	-233
167.77	-213.503
169.988	-174.764
172.113	-246.258
172.494	-232.865
177.855	-213.164
178.568	-250.038
179.486	-186.033
180.208	-244.185
184.28	-170.754
185.447	-181.114
185.597	-193.815
188.779	-204.507
192.978	-220.553
198.208	-224.535
199.346	-185.853
200.3	-229.917
204.028	-190.552
205.1	-217.909
208.686	-242.057
212.575	-243.511
212.942	-223.68
212.994	-259.469
215.643	-200.613
217.51	-219.069
218.193	-225.037
220.049	-172.226
220.181	-251.714
221.946	-185.973
222.738	-195.468
223.08	-177.071
225.058	-262.459
225.265	-220.209
228.767	-199.047
229.196	-188.481
230.268	-245.925
233.604	-207.356
234.708	-247.057
234.874	-213.096
239.822	-251.908
240.771	-178.647
242.287	-193.157
242.468	-249.385
243.207	-233.702
247.955	-196.673
248.178	-252.502
250.82	-147.687
252.076	-209.894
253.883	-199.777
255.635	-251.216
257.03	-78.085
257.108	-229.982
258.46	-119.812
258.641	-218.726
258.953	-166.529
259.216	-150.816
260.544	-146.563
260.557	-84.336
260.59	-67.364
260.742	-190.558
262.247	-79.629
262.316	-86.505
262.436	-227.381
263.622	-127.775
263.814	-85.251
263.874	-94.635
264.945	-75.656
265.038	-223.406
265.313	-204.995
269.082	-183.29
269.428	-209.686
269.984	-246.628
270.371	-84.1
271.263	-72.811
271.886	-195.877
272.59	-250.311
273.572	-97.019
274.086	-199.21
274.329	-235.096
276.979	-77.21
277.313	-246.859
278.096	-188.909
278.223	-68.026
278.35	-139.616
280.89	-195.992
281.413	-78.605
282.904	-92.113
284.499	-231.532
285.708	-240.821
286.862	-221.241
287.679	-135.925
290.702	-68.571
290.744	-76.063
291.361	-239.134
292.471	-89.893
292.915	-229.442
293.193	-99.059
294.381	-81.307
295.605	-141.156
298.543	-100.885
298.689	-239.704
299.711	-137.435
299.925	-221.066
300.618	-130.093
302.588	-93.782
304.273	-203.95
304.766	-194.382
305.091	-110.146
306.04	-88.153
306.761	-186.272
307.554	-173.64
307.778	-80.67
310.273	-87.523
310.368	-103.525
310.621	-71.728
311.168	-193.219
311.29	-198.237
311.338	-168.259
311.925	-115.413
312.178	-203.015
312.577	-98.959
314.495	-81.542
315.035	-185.075
315.256	-92.839
316.889	-196.098
317.982	-95.894
318.453	-181.028
320.048	-67.681
320.888	-88.357
321.327	-75.035
322.997	-104.616
323.373	-95.794
324.414	-193.768
325.789	-84.277
327.046	-89.805
328.459	-78.971
329.2	-251.549
329.913	-72.674
332.794	-263.695
333.451	-200.654
333.756	-124.516
334.524	-174.331
335.301	-213.95
335.759	-166.324
335.848	-210.629
336.07	-75.13
337.105	-87.3
337.78	-178.097
338.997	-65.673
340.501	-184.499
341.346	-193.458
341.55	-230.801
342.054	-80.684
343.082	-202.06
344.873	-69.301
345.798	-232.187
347.177	-201.136
347.53	-103.792
348.168	-87.125
349.156	-236.411
349.531	-252.794
350.503	-92.074
350.79	-116.177
350.953	-177.364
354.308	-123.398
354.417	-237.45
355.424	-197.235
358.092	-164.202
361.405	-240.484
363.009	-213.804
364.806	-243.099


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