Module: R::PNG

Defined in:
lib/rbbt/util/R/plot.rb

Class Method Summary collapse

Class Method Details

.eog(data, script = nil, width = nil, height = nil, options = {}) ⇒ Object 



94
95
96
97
98
99
 
# File 'lib/rbbt/util/R/plot.rb', line 94

def self.eog(data, script = nil, width = nil, height = nil, options = {})
  TmpFile.with_file :extension => 'png' do |filename|
    ggplot(filename, data, script, width, height, options)
    `eog #{ filename }`
  end
end

.eog_plot(data, script = nil, width = nil, height = nil, options = {}) ⇒ Object 



101
102
103
104
105
106
 
# File 'lib/rbbt/util/R/plot.rb', line 101

def self.eog_plot(data, script = nil, width = nil, height = nil, options = {})
  TmpFile.with_file :extension => 'png' do |filename|
    plot(filename, data, script, width, height, options)
    `eog #{ filename }`
  end
end

.ggplot(filename, data, script = nil, width = nil, height = nil, options = {}) ⇒ Object 



112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
 
# File 'lib/rbbt/util/R/plot.rb', line 112

def self.ggplot(filename, data, script = nil, width = nil, height = nil, options = {})
  width ||= 3
  height ||= 3
  values = []

  sources = [:plot, options[:source]].flatten.compact

  data.each do |k,v|
    v = Array === v ? v : [v]
    next if v == "NA" or v.nil? or v.include? "NA" or v.include? nil
    values = v
    break
  end
  values = [values] unless Array === values
  field_classes = values.collect do |v| 
    case v
    when FalseClass, TrueClass
      "'logical'"
    when Numeric
      "'numeric'"
    when String
      if v.strip =~ /^[-+]?[\d\.]+$/
        "'numeric'"
      else
        "'character'"
      end
    when Symbol
      "'factor'"
    else
      ":NA"
    end
  end
  options[:R_open] ||= "colClasses=c('character'," + field_classes * ", " + ')'

  data.R <<-EOF, :plot, options
rbbt.require('ggplot2')
plot = { #{script} }

ggsave('#{filename}', plot, width = #{R.ruby2R width}, height = #{R.ruby2R height})
data = NULL
  EOF
end

.ggplotPNG(*args) ⇒ Object 



108
109
110
 
# File 'lib/rbbt/util/R/plot.rb', line 108

def self.ggplotPNG(*args)
  ggplot(*args)
end

.plot(filename, data = nil, script = nil, width = nil, height = nil, options = {}, &block) ⇒ Object 



155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
 
# File 'lib/rbbt/util/R/plot.rb', line 155

def self.plot(filename, data = nil, script = nil, width = nil, height = nil, options = {}, &block)
  width ||= 600
  height ||= 600
  values = []

  script ||= ""
  if block_given?
    s = StringIO.new
    class << s
      def method_missing(name, *args)
        name = name.to_s
        if name[-1] == '='
          arg = args.first
          value = if String === arg
                    arg
                  else
                    R.ruby2R arg
                  end
          add("" << name[0..-2] << "=" << value)
        else
          args_strs = []
          args.each do |arg|
            value = if String === arg
                      arg
                    else
                      R.ruby2R arg
                    end
            args_strs << value
          end
          add("" << name << "(" << args_strs * ", " << ")")
        end
      end

      def add(line)
        self.write line << "\n"
      end
    end
    block.call(s)
    s.rewind
    script << "\n" << s.read
  end
  sources = [:plot, options[:source]].flatten.compact
  
  if data
    data.each do |k,v|
      v = Array === v ? v : [v]
      next if v == "NA" or v.nil? or v.include? "NA" or v.include? nil
      values = v
      break
    end 

    values = [values] unless values.nil? or Array === values

    field_classes = values.collect do |v| 
      case v
      when FalseClass, TrueClass
        "'logical'"
      when Numeric
        "'numeric'"
      when String
        if v.strip =~ /^[-+]?[\d\.]+$/
          "'numeric'"
        else
          "'character'"
        end
      when Symbol
        "'factor'"
      else
        ":NA"
      end
    end

    options[:R_open] ||= "colClasses=c('character'," + field_classes * ", " + ')' if field_classes.any?

    data.R <<-EOF, :plot, options
  rbbt.png_plot("#{ filename }", width=#{ width }, height = #{ height }, function(){ #{script} })
  data = NULL
    EOF
  else
    R.run <<-EOF, :plot, options
  rbbt.png_plot("#{ filename }", width=#{ width }, height = #{ height }, function(){ #{script} })
    EOF
  end
end