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in section 1183 we saw that the latitudes and longitudes for the countries are available on the web embedded in the
which team lost the world series each year do these teams also have high payrolls some argue that teams with lower
rewrite the add place mark and make style node functions to use the technique described in section 1182 that is
make an r plot for the pop-up window of each country that is for each country make a plot that is country-specific save
the plotting symbols used in figure 111 were created in r write a function as described in section 1181 to create a set
x path is a powerful tool for locating content in an xml document and there are often many x path expressions that we
wikipedia tables offer another source of data for example wikipedia has a list of infant mortality rates by country at
one might expect a team with old players to be paying these veteran players high salaries near the end of their careers
not all of the people in the database are players eg some are managers how many are players how many are managers how
do pitchers get better with age is there an improvement and then a fall off in performance is this related to how old
visualize the skills for data science job postings from other web sites eg dice com and monstercom are they similar
implement the fix num function it takes a number as a salary value and determines whether to multiply it by 1000 to
in the merge of inf mort df and pop df in section 113 some rows in each data frame were excluded from the resulting
we assumed the set of stop words was available there are many different sets of stop words and we can retrieve others
compare the data you scraped now to the data we obtained in 2013 available on the web site how have the salaries and
display all of the jobs from different sites geographically on a google earth or google maps display group the points
the data frame code map df contains a mapping of the iso 3166 codes to the codes used in the cia fact book it also
to determine the size of a circle in the map in figure 116 we used a scaling of the square-root of population we found
the mapproj 4 library contains various projections of the 3d earth into 2d maps install this package and investigate
consider a binary code with 5 bits 0 or 1 in each code word an example of a code word is 01010 how many different code
implement the function as words it accepts a character vector and separates each element into words using white space
on an american league baseball team with 15 field players and 10 pitchers the manager must select for the starting
shuffle a deck of cards and pick two cards at random observe the sequence of the two cards in the order in which they
create an excel spreadsheet to help you calculate the hypothetical cost of your school materials for this quarter
suppose we download the first 400 jobs using search jobs and later decide to retrieve the next 200 how do we avoid