Running ‘compute.animation_tests.R’ [2s/4s]
  Running ‘d3_animation_tests.R’ [4s/8s]
  Running ‘effects_tests.R’ [6s/9s]
  Running ‘filmstrip_tests.R’ [3s/4s]
  Running ‘layout_tests.R’ [2s/3s]
  Running ‘networkAnimationTest.R’ [2s/3s]
  Running ‘proximity.timeline_test.R’ [2s/4s]
  Running ‘render.animation_test.R’ [7s/13s]
  Running ‘timePrisimTest.R’ [2s/3s]
  Running ‘timeline_test.R’ [7s/11s]
  Running ‘transmissionTimelineTests.R’ [2s/3s]
  Running ‘weighttest.R’ [8s/15s]
  Running ‘writeFormatTests.R’ [1s/2s]
Running the tests in ‘tests/proximity.timeline_test.R’ failed.
Complete output:
  > # some tests tfor the proximity.timeline function
  > require(ndtv)
  Loading required package: ndtv
  Loading required package: network
  
  'network' 1.17.1 (2021-06-12), part of the Statnet Project
  * 'news(package="network")' for changes since last version
  * 'citation("network")' for citation information
  * 'https://statnet.org' for help, support, and other information
  
  Loading required package: networkDynamic
  
  'networkDynamic' 0.11.0 (2021-06-12), part of the Statnet Project
  * 'news(package="networkDynamic")' for changes since last version
  * 'citation("networkDynamic")' for citation information
  * 'https://statnet.org' for help, support, and other information
  
  Loading required package: animation
  Loading required package: sna
  Loading required package: statnet.common
  
  Attaching package: 'statnet.common'
  
  The following objects are masked from 'package:base':
  
      attr, order
  
  sna: Tools for Social Network Analysis
  Version 2.6 created on 2020-10-5.
  copyright (c) 2005, Carter T. Butts, University of California-Irvine
   For citation information, type citation("sna").
   Type help(package="sna") to get started.
  
  
  'ndtv' 0.13.1 (2021-07-29), part of the Statnet Project
  * 'news(package="ndtv")' for changes since last version
  * 'citation("ndtv")' for citation information
  * 'https://statnet.org' for help, support, and other information
  
  > require(testthat)
  Loading required package: testthat
  > 
  > test<-network.initialize(10)
  > add.edges.active(test,head=1:9,tail=2:10,onset=0,terminus=10)
  > add.edges.active(test,head=1,tail=3,onset=1,terminus=2)
  > proximity.timeline(test)
  collapsing slice networks ...
  computing vertex positions using 1D isoMDS layout ...
    computing positions for slice 1
    computing positions for slice 2
    computing positions for slice 3
    computing positions for slice 4
  rendering splines for each vertex ...
  > 
  > data(McFarland_cls33_10_16_96)
  > proximity.timeline(cls33_10_16_96,onsets=seq(0,45,5),termini=seq(2.5,47.5,5),vertex.cex=(cls33_10_16_96%v%'type'=='instructor')*4+1,labels.at=45)
  collapsing slice networks ...
  computing vertex positions using 1D isoMDS layout ...
    computing positions for slice 1
    computing positions for slice 2
    computing positions for slice 3
    computing positions for slice 4
    computing positions for slice 5
    computing positions for slice 6
    computing positions for slice 7
    computing positions for slice 8
    computing positions for slice 9
    computing positions for slice 10
  rendering splines for each vertex ...
  > 
  > # test algorithm types
  > test_that("algorithms work",{
  + # isoMDS is default, so already tested
  + proximity.timeline(cls33_10_16_96,onsets=seq(0,45,5),termini=seq(2.5,47.5,5),mode='sammon')
  + proximity.timeline(cls33_10_16_96,onsets=seq(0,45,5),termini=seq(2.5,47.5,5),mode='cmdscale')
  + proximity.timeline(cls33_10_16_96,onsets=seq(0,45,5),termini=seq(2.5,47.5,5),mode='gvNeato')
  + # only check MDSJ if allready installed (and not on CRAN)
  + skip_on_cran()
  + has.mdsj<-ndtv:::check.mdsj(ask=FALSE)
  + if(!is.null(has.mdsj)){
  + proximity.timeline(cls33_10_16_96,onsets=seq(0,45,5),termini=seq(2.5,47.5,5),mode='MDSJ')
  + }
  + 
  + })
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  The Graphviz neato utility does not appear to be installed on this system. See ?install.graphviz for more information
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
   3. ndtv:::check.graphviz()
  
  ── Warning (???): algorithms work ──────────────────────────────────────────────
  Unable to locate the Graphviz library, using KamadaKawai layout instead
  Backtrace:
   1. ndtv::proximity.timeline(...)
   2. ndtv::network.layout.animate.Graphviz(...)
  
  ── Error (???): algorithms work ────────────────────────────────────────────────
  Error in `install.mdsj(mdsj.dir)`: Unable to install MDSJ because the package path /home/hornik/tmp/R.check/r-devel-gcc/Work/build/Packages/ndtv/java/does not appear to have write permissions
  Backtrace:
   1. ndtv:::check.mdsj(ask = FALSE)
   2. ndtv:::install.mdsj(mdsj.dir)
  
  Error: Test failed
  Execution halted