title: R : Large (?) visNetwork rendered poorly
body: <p>I'm trying to represent a care network(<code>disease -&gt; hospital</code>) . I use visNetwork for that. Here's some details on my network : 2540 vertices and 15776 edges. Here the results when using only 1000 edges : 
  <a href="https://i.stack.imgur.com/oavLd.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/oavLd.png" alt="visNetwork with 1000 edges"></a>
  whereas with only 500 edges it's readable: <a href="https://i.stack.imgur.com/ZbwkO.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZbwkO.png" alt="visNetwork with 500 edges"></a>
  There after the code which permits these graphs :</p>
  
  <pre><code>visNetwork(nodes=vn_nodes,edges = vn_edges, height = "1000px",width="100%")%&gt;%
  visPhysics(enabled = FALSE)%&gt;%
  visLayout(randomSeed = 12)
  </code></pre>
  
  <p>I played a little bit with options but without results. Any Ideas to make it usefull or do I need to change package (I've tried networkD3 without real satisfaction either)?</p>
  
  <p>Edit : (add some data)</p>
  
  <p>For <a href="https://framabin.org/?62a01b70ce951ca2#XgJrf2bmWaIOJDum9sPGDmSrg4/N2J1CqZZoS7Cb5hI=" rel="nofollow noreferrer">edges</a></p>
  
  <pre><code>    &gt;vn_nodes
             label   id title group
  3     INSEE06004 2469   123     I
  4     INSEE06088 2470  2393     I
  5     INSEE10387 2471    91     I
  6     INSEE13055 2472    75     I
  7     INSEE13056 2473    54     I
  8     INSEE13205 2474  4192     I
  9     INSEE14118 2475   443     I
  11    INSEE20004 2477    13     I
  12    INSEE20033 2478    32     I
  13    INSEE21231 2479  2309     I
  14    INSEE25056 2480    35     I
  15    INSEE28085 2481    48     I
  16    INSEE29019 2482  2266     I
  18    INSEE30189 2484   194     I
  19    INSEE33063 2485  3080     I
  20    INSEE34172 2486  5245     I
  21    INSEE35238 2487  3869     I
  22    INSEE37261 2488  2639     I
  23    INSEE38516 2489  2493     I
  25    INSEE44109 2491  3083     I
  26    INSEE49007 2492  1330     I
  27    INSEE51454 2493  1144     I
  28    INSEE54395 2494  1304     I
  30    INSEE54547 2496  1839     I
  31    INSEE56260 2497   412     I
  33    INSEE59183 2499   220     I
  34    INSEE59350 2500  7339     I
  35    INSEE59606 2501   351     I
  36    INSEE60340 2502    32     I
  37    INSEE62041 2503   706     I
  38    INSEE62160 2504    10     I
  39    INSEE62498 2505  1019     I
  40    INSEE63113 2506  1526     I
  41    INSEE64102 2507    50     I
  42    INSEE64445 2508    15     I
  43    INSEE67482 2509  3382     I
  44    INSEE69029 2510  2905     I
  45    INSEE71076 2511    71     I
  46    INSEE72181 2512  1312     I
  47    INSEE75112 2513   460     I
  48    INSEE75113 2514   342     I
  50    INSEE75115 2516  3333     I
  51    INSEE75118 2517    15     I
  52    INSEE75119 2518  6813     I
  53    INSEE78498 2519    84     I
  54    INSEE80021 2520  2378     I
  55    INSEE83050 2521   116     I
  56    INSEE83137 2522   285     I
  57    INSEE84007 2523   132     I
  58    INSEE86194 2524  1351     I
  59    INSEE89024 2525    68     I
  61    INSEE92024 2527     5     I
  62    INSEE92025 2528   101     I
  63    INSEE93010 2529    87     I
  64    INSEE94028 2530   560     I
  65    INSEE95500 2531   126     I
  66    INSEE97120 2532   464     I
  67    INSEE97209 2533   229     I
  69    INSEE97302 2535   389     I
  70    INSEE97311 2536   233     I
  71    INSEE97416 2537   895     I
  72    INSEE98735 2538   121     I
  73    INSEE98818 2539    44     I
  74       ORPHA10   35     3     O
  89      ORPHA100  374     3     O
  108  ORPHA100011 1510     1     O
  110  ORPHA100013 2179     1     O
  111  ORPHA100031 1038     1     O
  120  ORPHA100033 2461     1     O
  121  ORPHA100043 1946     1     O
  122  ORPHA100092 1170     1     O
  124    ORPHA1001  136     4     O
  140  ORPHA100973   27     7     O
  158  ORPHA100980  761     5     O
  171  ORPHA100981 1649     3     O
  175  ORPHA100982 1342     4     O
  181     ORPHA101 2142     2     O
  182  ORPHA101016  762     1     O
  192  ORPHA101023  289     1     O
  218  ORPHA101029 1912     1     O
  219  ORPHA101033 1708     1     O
  220  ORPHA101038 1010     1     O
  226  ORPHA101039  763     4     O
  232  ORPHA101063  764     1     O
  238  ORPHA101070 1511     2     O
  244  ORPHA101075 1512     1     O
  247  ORPHA101076 1513     1     O
  250  ORPHA101081  834     3     O
  265  ORPHA101082 1786     1     O
  267  ORPHA101088 1913     3     O
  268  ORPHA101090 1861     1     O
  270  ORPHA101097 1343     1     O
  272  ORPHA101150 1344     1     O
  275  ORPHA101330  765     1     O
  278  ORPHA101685  290     4     O
  329    ORPHA1018 1810     2     O
  330  ORPHA101944 1011     1     O
  334  ORPHA101950  766     1     O
  335    ORPHA1020 1391     1     O
  336  ORPHA102002  291     3     O
  355  ORPHA102009 1012     1     O
  358  ORPHA102010  767     1     O
  366  ORPHA102013  292     2     O
  368  ORPHA102283   28    31     O
  418  ORPHA102284   29     4     O
  469  ORPHA102285  293     1     O
  517  ORPHA102369   30    12     O
  555  ORPHA102373 1345     1     O
  556    ORPHA1027 2019     1     O
  557     ORPHA103  375     1     O
  573    ORPHA1031 1241     1     O
  578    ORPHA1034  137     1     O
  609    ORPHA1037  138     3     O
  627  ORPHA103918 1787     1     O
  628     ORPHA104 1043     3     O
  647  ORPHA104003 2127     1     O
  648  ORPHA104007 1171     1     O
  651  ORPHA104009 2128     1     O
  653  ORPHA104010 1788     1     O
  656  ORPHA104013 1789     1     O
  657  ORPHA104075 2288     1     O
  658    ORPHA1041  890     3     O
  674    ORPHA1046 1811     1     O
  675    ORPHA1047 1555     1     O
  676    ORPHA1048  891     4     O
  697     ORPHA105 1356     1     O
  704    ORPHA1052  325     1     O
  723    ORPHA1053 1556     1     O
  726    ORPHA1054  494     1     O
  731    ORPHA1055 1392     1     O
  732    ORPHA1057 1242     1     O
  735    ORPHA1059 1670     1     O
  738     ORPHA106    7     7     O
  789    ORPHA1062 1671     1     O
  790    ORPHA1064 2218     1     O
  791    ORPHA1065 1557     1     O
  796    ORPHA1068 2260     1     O
  797     ORPHA107   48    12     O
  830    ORPHA1071  345    10     O
  844    ORPHA1072 1393     1     O
  846    ORPHA1081  495     1     O
  848    ORPHA1083  496     1     O
  853    ORPHA1084 1558     3     O
  856    ORPHA1088 2429     1     O
  857  ORPHA108959 1709     1     O
  859  ORPHA108961 1990     1     O
  860  ORPHA108963 1013     1     O
  861  ORPHA108967 1014     1     O
  865  ORPHA108969 1947     2     O
  868  ORPHA108971 1514     1     O
  872  ORPHA108973 2129     1     O
  873  ORPHA108977  294     1     O
  877  ORPHA108979 1991     1     O
  878  ORPHA108981  768     1     O
  890  ORPHA108983 1650     1     O
  892  ORPHA108985  355     1     O
  898  ORPHA108989 1515     1     O
  910  ORPHA108991 1172     2     O
  913     ORPHA109  376     1     O
  923  ORPHA109007  295     3     O
  940  ORPHA109009  769     1     O
  946  ORPHA109011  296     1     O
  969      ORPHA11  836     1     O
  972     ORPHA110   49     1     O
  1003   ORPHA1104 1243     1     O
  1004    ORPHA111 1044     2     O
  1010   ORPHA1114  497     1     O
  1017   ORPHA1117 2313     2     O
  1018   ORPHA1118 1953     1     O
  1021    ORPHA112   50     2     O
  1033   ORPHA1125 1077     1     O
  1039   ORPHA1126 1672     1     O
  1040    ORPHA113 1207     1     O
  1042   ORPHA1132  498     2     O
  1045   ORPHA1134 1078     1     O
  1046   ORPHA1135 2219     1     O
  1047   ORPHA1136 1394     1     O
  1061   ORPHA1138 1673     1     O
  1062   ORPHA1143 1079     1     O
  </code></pre>