dockerizing

dabo/functions/get_rsi_indicator.sh

@@ -0,0 +1,79 @@
+function get_rsi_indicator {
+  #g_echo_note "RUNNING FUNCTION ${FUNCNAME} $@"
+  # get histfile
+  local f_hist_file="$1"
+  local f_last_minutes="$2"
+
+  # calculate change of lastest f_last_minutes+1 prices for calculating rsi over the last f_last_minutes periods
+  local f_price
+  local f_last_price
+  local f_positive_sum=0
+  local f_negative_sum=0
+  f_rsi=""
+
+  local f_period=$((f_last_minutes+1))
+  local f_period_sum=$(tail -n${f_period} "${f_hist_file}" | cut -d, -f2 | grep "^[0-9]" | wc -l)
+  if ! [ ${f_period_sum} -ge ${f_period} ]
+  then
+    g_echo_note "${FUNCNAME} $@: Not enough data - waiting for more values. (${f_period} needed; ${f_period_sum} given)"
+    echo -n ",${f_rsi}" >>"${f_hist_file}"
+    return 0
+  fi
+  
+#  for f_price in $(tail -n${f_period} "${f_hist_file}" | cut -d"," -f2)
+#  do
+#    # not for the first line because a comparative value is missing
+#    if [ -z "${f_last_price}" ] 
+#    then
+#      f_last_price=${f_price}
+#      continue
+#    fi
+#   
+#    # calculate each change
+#    local f_price_change=$(g_percentage-diff ${f_last_price} ${f_price})
+#    f_last_price=${f_price}
+#    
+#    # add positive/negative changes
+#    if echo "${f_price_change}" | grep -q '^-'
+#    then
+#      f_negative_sum=$(echo "${f_negative_sum}+${f_price_change}" | bc -l)
+#    else
+#      f_positive_sum=$(echo "${f_positive_sum}+${f_price_change}" | bc -l)
+#    fi
+#  done
+ 
+  f_positive_sum=$(tail -n${f_period} "${f_hist_file}" | cut -d"," -f3 | grep "^[0-9]" | awk "{ SUM += \$1} END { printf(\"%10.10f\", SUM/${f_period}) }")
+  f_negative_sum=$(tail -n${f_period} "${f_hist_file}" | cut -d"," -f3 | grep "^-[0-9]" | awk "{ SUM += \$1} END { printf(\"%10.10f\", SUM/${f_period}) }")
+
+
+  # if one of both is "0" then fix results
+  if [ ${f_negative_sum} == "0.0000000000" ] 
+  then
+    f_rsi=100
+    #g_echo_note "RSI-Indicator RSI: ${f_rsi}%"
+    echo -n ",${f_rsi}" >>"${f_hist_file}"
+    return 0
+  fi
+
+  if [ ${f_positive_sum} == "0.0000000000" ] 
+  then
+    f_rsi=0
+    #g_echo_note "RSI-Indicator RSI: ${f_rsi}%"
+    echo -n ",${f_rsi}" >>"${f_hist_file}"
+    return 0
+  fi
+
+  # calculate positive/negative change averages
+  local f_negative_sum_average=$(echo "${f_negative_sum}/${f_last_minutes}" | bc -l | sed 's/-//') 
+  local f_positive_sum_average=$(echo "${f_positive_sum}/${f_last_minutes}" | bc -l)
+
+  # calculate RS and RSI
+  local f_rs=$(echo "${f_positive_sum_average}/${f_negative_sum_average}" | bc -l)
+  f_rsi=$(echo "100-(100/(1+${f_rs}))" | bc -l | xargs printf "%.0f")
+  
+  echo -n ",${f_rsi}" >>"${f_hist_file}"
+
+  #g_echo_note "RSI-Indicator RSI: ${f_rsi}%"
+  
+}
+